User Documentation

1 2
Power Analyser
Energy Meter D370-CBM
Installation manual
Supplement to the operation manual

Installation

Technical data
3
5
4
The device is a universal measurement
device for low voltage distribution systems,
which
• measures and calculates electrical variables
such as voltage, current, power, energy,
harmonics, etc. in building installations, on
distribution units, circuit breakers and busbar
trunking systems.
• transmits measurement results via interface.
The device will be installed in switch cabinets or
in small installation distributors per DIN 43880
on a 35 mm mounting rail per DIN EN 60715.
• The device fulfi ls the application conditions
of DIN IEC 60721-3-3 and is intended for
permanent installation in locations that are
protected from the weather.
• It can be installed in any mounting position.
• Forced ventilation is not required.
6 7
Deutsche Version:
siehe Vorderseite
Brief description of device Assembly
Fig. Device on
mounting rail per
DIN EN 60715.
Connecting the supply voltage
c
WARNING!
Danger of injury due to
electrical voltage!
Serious bodily injury or death can result from:
• Contact with bare or stripped live wires.
• Device inputs that are dangerous to touch.
Render the system free of voltage before
starting work! Check the system is free of
electrical energy!
The device derives its supply voltage from the
measurement voltage L1-N, L2-N and L3-N.
In doing so, at least one phase lies within the
nominal voltage range.
The device requires a voltage of at least 100 Veff
in at least one phase (L-N) for operation.
Current measurement
The device
• is only approved for measuring current with
a current transformer.
• is intended for the connection of current
transformers with secondary currents of
../1 A and ../5 A.
• has the current transformer ratio set to 5/5 A
as standard.
• The current transformers must have a base
insulation according to IEC 61010-1: 2010
for the nominal voltage of the circuit.
c
WARNING!
Danger of injury due to
electrical voltage!
Serious bodily injury or death
can result from:
• Contact with bare or stripped live wires.
• Current measurement inputs on the device
and on the current transformer that are
dangerous to touch.
Render the system free of voltage before
starting work! Check the system is free of
electrical energy! Ground the system!
Use the earth connection points with
earthing symbols for this!
Ground the secondary windings of current
transformers and all of the metal parts of
the transformer that could be touched!

NOTE!
• Further information on current
transformers can be found in the
operation manual.
• Current transformer ratios can be
confi gured via the software.
Connection "Current measurement via current
transformers".
Three-phase, four-conductor
system
Single-phase, three-conductor
system
Voltage measurement in the
three-phase, four-conductor system
Voltage measurement in the
single-phase, three-conductor system
Connection variants for voltage measurement

NOTE!
Because the device derives the supply
voltage from the measured voltage and
burdens the voltage transformer with
a non-linear current, the device is only
partially suitable for use in medium and
high voltage networks.

NOTE!
Voltage transformer ratios can be
confi gured via the software.
Technical data
0
1
2
4
6
7
5
3
8
9
0
1
2
4
6
7
5
3
8
9
x10
(10-90)
x1
(1-9)
The green LED illuminates. Measurement
and supply voltages lie within the operating
voltage range. The device is operational.
The LED fl ashes for 0.5 sec. every 5 secs.
Both LEDs light up. The device is ready
for operation. At least one measurement
voltage or the supply voltage is below the
operating voltage range.
The green LED fl ashes.
Data transfer (RS485) is active.
The LEDs fl ash at the same time.
The data transfer (RS485) is faulty.
The red LED illuminates. Fault in the device!
Have the device checked by the manufacturer!
The red LED fl ashes. At least one current
measurement input or voltage measurement
input exceeds the measurement range.
The LEDs fl ash alternately.
Firmware checksum fault! Operation is
interrupted! Carry out a fi rmware update!
Connections and control elements
Red LED
Green LED
Coding
switches
for setting the
device address
RS485
Interface
Current measurement connection
Connection of measurement
voltage and supply voltage
Coding switches
You can confi gure the device address with the
coding switches as follows:
Confi gure the device addresses in
the range of 01 to 99 with the coding
switches.
The device address 00 is reserved for
service purposes (further information
in the operation manual).
LEDs
Voltage measurement
The device derives its supply voltage from the
measured voltage.
m
CAUTION!
Danger of injury or damage
to the device
Disregard of the connection conditions for
the voltage measurement inputs can result in
injuries or to the device being damaged.
For this reason, note that:
• The voltage measurement inputs
- are not connected to DC voltage.
- are equipped with a suitable, labelled
fuse located in the vicinity and
isolation device (alternative: circuit
breaker) located nearby.
- are dangerous to touch.
• Voltages that exceed the allowed rated
network voltages must be connected via
a voltage transformer.
• Measured voltages and measured currents
must derive from the same network.
Disconnectors
Fuse (UL/IEC listed)
Load
• The device measures voltages L-N up to 277 V
and L-L up to 480 V.
• The measurement and surge voltages meet
overvoltage category 300 V CATIII.

NOTE!
• A circuit breaker can be used as an al-
ternative to a fuse and isolating device.
• If the range is exceeded, the red LED
fl ashes (see step „connections and
controls“).
Typical connection variants
The following schematic shows a typical connection variant for the device with:
• Supply voltage and voltage measurement.
• Current measurement.
• RS485 interface with Modbus RTU protocol.
Connection
variant in the
"Three-phase,
four-conductor system".

NOTE!
Further technical data can be found in
the operation manual.
1.
(gedrehtes Patchkabel)
RS485
RS485
RS485
RS232 RS232

NOTE!
Install the “ecoExplorer go” software on the
PC to be used!
2.
(gedrehtes Patchkabel)
USB
RS485
RS485
RS485
USB
(gedrehtes Patchkabel)
3.
Connection of the device via an
Energy Meter D550 as gateway.
RS485
Ethernet
RS485
Establish connection to PC
The 3 most common connections for communication
between PC and device are described in the following:
Device connection via interface
converter.
Device connection via interface
converter.
8
12 11 13
15
The PC connection of the device via the RS485
serial interface with, for example, an Energy Meter
D550 as gateway (see step “Established connec-
tion to PC”) is a method
• for confi guring the device(s)
• and reading out data.
e.g. connection to the
Energy Meter D550
as gateway (Master)
Example: PC connection via RS485 interface and Energy Meter D550 as gateway
e.g. connection
to further
Slave devices
RS485 bus structure
• In an RS485 bus structure (line), you connect
all devices in accordance with the Master-Slave
principle.
• One segment of an RS485 bus structure can
include up to 32 subscribers/devices.
• Terminate the cable at the start and end of a
segment with termination resistors (120 Ω, 0.25 W).
The device has no termination resistor.
• With more than 32 subscribers, repeaters must
be used to connect segments.
Correct
Incorrect
Terminal strip (switch cabinet).
Device with RS485 interface
(without termination resistor).
Device with RS485 interface
(termination resistor on the
device).

NOTE!
The coding switches can be used in the
RS485 bus structure to allocate the Slave
devices (Energy Meter D370-CBM)
• different device addresses.
• different device addresses to the Master
device (Energy Meter D550).
The Energy Meter D370-CBM detects the
transmission speed (Baud rate) automatically!
Three-phase, four-conductor
system
Single-phase, three-conductor
system
Current measurement via current
transformer in three-phase,
four-conductor system
Current measurement in the
single-phase, three-conductor
system
Three-phase,
four-conductor system
Current measurement via
2 current transformers in three-
phase, four-conductor system
Connection variants for current measurement

NOTE!
If the range is exceeded, the red LED
fl ashes. (see Step „connections and
control elements“)
Mains systems
Suitable mains systems and max. rated voltages (DIN EN 61010-1/A1):
The device can be used in
• TN and TT networks
• in residential and industrial applications.
Three-phase, four-conductor systems
with earthed neutral conductor
Three-phase, four-conductor systems
with non-earthed neutral conductor
L1
L2
L3
EE
N
E
L1
L2
L3
E
N
R
L1
L2
L3
EE
L1
L2
EE
L
N
EE
L1
L2
L3
EE
L1
L2
N
EE
L1
L2
L3
EE
N
E
L1
L2
L3
E
N
R
L1
L2
L3
EE
L1
L2
EE
L
N
EE
L1
L2
L3
EE
L1
L2
N
EE
U
L-N
/ U
L-L
277 VLN / 480 VLL
Connect in this grid system,
the device only using a voltage
transformer!
Safety

NOTE!
For further information on device functions, data and assembly, see the operation manual.
109
Technical data
14
m
CAUTION!
Damage to property due to
disregard of the connection
conditions or impermissible
overvoltage!
Your device can be damaged or destroyed
by a failure to comply with the connection
conditions or by exceeding the permissible
voltage range.
Before connecting the device to the supply
voltage, please check:
• Voltage and frequency correspond to the
details on the ratings plate! Limit values
stipulated in the operation manual have
been complied with!
• In building installations, the supply
voltage must be protected with a UL/IEC
approved circuit breaker / a fuse!
• The isolation device
- must be installed near the device
and in a location that is easily
accessible for the user.
- must be labelled to identify the
respective device.
• Do not tap the supply voltage from the
voltage transformer.
• Provide a fuse for the neutral conductor
if the neutral conductor terminal of the
source is not grounded.
L3
N
L1
L2
Connection variant "Direct voltage measurement
in the three-phase, four-conductor system".
Fig. Energy Meter D370-CBM
Voltage measurement
3-phase, 4-conductor
systems with rated voltages
(L-N/L-L)
max. 277 V/480 V
Networks
Measurement in TT and TN
networks
Rated surge voltage 4 kV
Protection of
voltage measurement
1 - 10 A Trip characteristic B,
(With IEC / UL approval)
Overvoltage category 300 V CAT III
Resolution 0.01 V
Crest factor 2 (related to 240 Vrms)
Sampling rate 5.4 kHz
Frequency range of
the fundamental oscillation -
resolution
45 Hz .. 65 Hz
0.001 Hz
Fourier analysis 1.-25. Harmonic (all odd)
Current measurement
Nominal current 5 A
Rated current 6 A
Crest factor 2 (related to 6 Arms)
Resolution 0.1 mA
Measuring range 0.005 ... 6 Arms
Overvoltage category 300 V CAT II
Rated surge voltage 2 kV
Power consumption approx 0.2 VA (Ri=5 mΩ)
Overload for 1 sec. 60 A (sinusoidal)
Sampling rate 5.4 kHz
Supply voltage
The device gets the supply voltage from the measuring voltage!
Supply from single phase 115 - 277 V (+-10%), 50/60 Hz
Supply from three phases 80 - 277 V (+-10%), 50/60 Hz
Power consumption max. 1.5 VA
General information
Net weight 200 g
Device dimensions
h = 98 mm,
w = 71.5 mm,
d = 46 mm
Transport and storage
The following information applies to devices which are trans-
ported or stored in the original packaging.
Free fall
1 m
Temperature -20° C to +70° C
Ambient coditions during operation
The device
• weatherproof and use stationary!
• fulfi lls the conditions in accordance with DIN IEC 60721-3-3
• has protection class II according to IEC 60536 (VDE 0106,
part 1) and does not require a protective earth connection.
Operating temperature range -25° C .. +60° C
Relative humidity
5 to 95% (at +25° C)
without condensation
Operating altitude 0 .. 2000 m above sea level
Degree of pollution 2
Housing fl ammability class UL94V-0
Installed position any
Fixing/mounting
35 mm top hat rail (according to
IEC/EN 60999-1, DIN EN 50022)
Stress by impact
2 joules, IK07 according to
IEC / EN61010-1: 2010
Ventilation no external ventilation required.
Protection against ingress
of solid foreign bodies and
water
IP20 according to EN60529
September 2000,
IEC60529:1989
Terminal connection capacity
Conductors to be connected.
Only one conductor can be connected per terminal!
Single core, multi-core,
fi ne-stranded
0.08 - 2.5 mm
2
, AWG 28 - 12
Tightening torque max. 0.5 Nm
Stripping length min. 8 mm
RS485 interface
Protocol, modbus RTU Modbus RTU/Slave
Transfer rate
9.6 kbps, 19.2 kbps,
38.4 kbps, 57.6 kbps,
115.2 kbps,
automatic detection
Procedure in the event of faults
Possible fault Cause Remedy
No LED lights
External fusing for the power supply voltage has tripped. Replace fuse.
Device is defective. Send device to the manufacturer for repair.
Measured current is too large
or too small. *
Current transformer factor is incorrectly programmed.
Read out current transformer ratio and program with
the software „ecoExplorer go“.
Measured current is too
small. *
Overrange.
Install current transformer with a larger current
transformer ratio.
The peak current value at the measurement input has
been exceeded by harmonic components.
Measured voltage is too large
or too small. *
Measurement in the wrong phase.
Check connection and correct if necessary
(„ecoExplorer go“).
Voltage transformer incorrectly programmed.
Read out voltage transformer ratio and program with
the software „ecoExplorer go“.
Measured voltage is too
small. *
Overrange.
Install voltage transformers.
The peak voltage value at the measurement input has
been exceeded by harmonic components.
Active power is too large or
too small. *
The programmed current transformer transformation
ratio is incorrect.
Read out current transformer ratio and program with
the software „ecoExplorer go“.
The current path is assigned to the wrong voltage path.
Check connection and correct if necessary
(„ecoExplorer go“).
The programmed voltage transformer transformation
ratio is incorrect.
Read out voltage transformer ratio and program with
the software „ecoExplorer go“.
Active power imported
supply / supply is reversed.
At least one current transformer connection is mixed
up/reversed.
Check connection using the software „ecoExplorer
go“ and correct, if necessary.
A current path is assigned to the wrong voltage path.
No connection with the device. RS485: Device address is incorrect or wrong protocol. Adjust the device address / select protocol.
Despite the measures above
the device does not work.
Device is defective.
Send device and error description to verify the
manufacturer.
*...
m CAUTION!
Material damage from overloaded measurement inputs!
Too high current and voltage values overload the measurement inputs.
Observe the limits stated on the nameplate and in the operation manual!
c
WARNING!
Danger of injury due
to high currents and high
electrical voltages!
Current transformers operating with an open
secondary circuit (high voltage peaks) can
result in serious or even fatal injuries.
Avoid open operation of the current transformers
- short-circuit unloaded transformers!
Energy Meter D370-CBM
RS485
2 3
AB
1
Data GND
Strommessung
Current measurement
Mess- und Versorgungsspannung
Measuring and supply voltage
Verbraucher
Load
A
B
C
RS485 bus
A
B
A
B
Data GND
Measurement data recording
Memory (Flash)
4 MB
(1024 Sectors a 4kB)
Record storage
(all profi les activated)
16000 records
Battery (soldered)
Typical life expectancy
BR 1632, 3V
8 - 10 years
www.weidmueller.com
Weidmüller Interface GmbH & Co. KG
Klingenbergstraße 16
D-32758 Detmold
[phone]
[phone]
[e-mail]
http://wmqr.eu/254083
General
Disclaimer
The observance of the information products for
the devices is a prerequisite for safe operation
and to achieve the stipulated performance
characteristics and product characteristics.
Weidmüller Interface GmbH & Co. KG accepts
no liability for injuries to personnel, property
damage or fi nancial losses arising due to a
failure to comply with the information products.
Ensure that your information products are
accessible and legible.
Further documentation is available on our
website at www.weidmueller.de.
Copyright notice
© 2017 - Weidmüller Interface GmbH & Co.
KG - Detmold. All rights reserved. Duplication,
editing, distribution and any form of
exploitation, also as excerpts, is prohibited.
Subject to technical amendments
• Make sure that your device agrees with the
installation manual.
• Read and understand fi rst product-related
documents.
• Keep product supporting documentation
throughout the life available and, where approp-
riate, to pass on to subsequent users.
• Please inform yourself about device revisions
and the associated adjustments to the product-
related documentation on www.weidmueller.de.
Disposal
Observe the national regulations! If necessary,
dispose of individual parts according to their
properties and existing country-specifi c
regulations, e.g. as:
• Electronic waste
• Plastics
• Metals
or commission a certifi ed disposal company with
scrapping.
Relevant laws, applied standards and directives
For information on the laws, standards and
directives that Weidmüller Interface GmbH & Co.
KG applied for the device, see the declaration of
conformity.
PC/
ecoExplorer go
Fig. Energy Meter D370-CBM
Energy Meter
D550
Energy Meter
D370-CBM
PC/
ecoExplorer go
PC/
ecoExplorer go
Energy Meter
D370-CBM
Energy Meter
D370-CBM
Energy Meter
D370-CBM
Energy Meter
D370-CBM
Energy Meter
D370-CBM
Safety information
The Installation manual is not a complete
directory of all safety measures required to
operate the device.
Special operating conditions may require further
measures. The Installation manual contains
instructions that must be observed to ensure
your personal safety and to prevent damage to
property.
Symbols used:
c
This symbol is an addition to the
safety instructions and indicates
an electrical hazard.
m
This symbol is an addition to the
safety instructions and indicates
a potential hazard.

This symbol with the word NOTE!
describes:
• Procedures that do not pose
any risks of injures.
• Important information,
procedures or handling steps.
Safety information is highlighted by a warning
triangle and is indicated as follows depending
on the degree of danger:
m
DANGER!
Indicates an imminent danger that
causes severe or fatal injuries.
m
WARNING!
Indicates a potentially hazardous
situation that can cause severe
injuries or death.
m
CAUTION!
Indicates a potentially hazardous
situation that can cause minor
injuries or damage to property.
Safety measures
When operating electrical devices, certain parts
of these devices are invariably subjected to
hazardous voltage. Therefore, severe bodily
injuries or damage to property can occur if they
are not handled properly:
• Before connecting connections, ground
the device at the protective conductor
connection if present.
• Hazardous voltages may be present in all
switching parts that are connected to the
power supply.
• Hazardous voltages may also be present
in the device even after disconnecting the
supply voltage (capacitor storage).
• Do not operate equipment with current
transformer circuits while open.
• Do not exceed the threshold values specifi ed
in the operation manual and on the rating
plate. Also adhere to this when inspecting and
commissioning.
• Observe the safety and warning instructions in
the documents that belong to the device!
Qualifi ed staff
The device must only be installed, put into
operation and maintained by qualifi ed electricians
who are familiar with national and international
laws, provisions and standards.
Proper use
The device is
• intended for installation in switch cabinets
and small installation distributors. It can be
installed in any mounting position (please
observe step 3 "Assembly").
• not intended for installation in vehicles!
The use of the device in mobile equipment
is considered to be non-standard
environmental conditions and is therefore
only permitted after separate agreement.
• not intended for installation in environments
with hazardous oils, acids, gases, vapours,
dusts, radiation, etc.
They should be installed in an appropriate
enclosure (such as an electrical cabinet or
distributor box) which provides a suffi cient
level of protection so that live current-carry
components cannot be touched and so that
dust and water cannot penetrate the unit.
The safety of the device must not be impaired
by its installation.
The prerequisites of faultless, safe operation
of this device are proper transport and proper
storage, set-up, installation, operation and
maintenance.
All signals connected with the device’s SELV
circuit must also conform with the SELV
provisions.
2576890000/00/01.18
B
A
C
B
A
C
Consumer
L2
L3
L1
S
2
S
1
S
2
S
1
S
2
S
1
B
A
C
B
A
C
L1 L2 L3 N