Owner manual

Watlow EZ-ZONE
®
PM Integrated Controller • 39 • Chapter 2 Install and Wire
Warning: Óç
Use National Electric (NEC) or other
country-specific standard wiring and
safety practices when wiring and
connecting this controller to a power
source and to electrical sensors or
peripheral devices. Failure to do so
may result in damage to equipment
and property, and/or injury or loss
of life.
Note:
Maximum wire size termination and
torque rating:
• 0.0507 to 3.30 mm
2
(30 to 12
AWG) single-wire termination or
two 1.31 mm
2
(16 AWG)
• 0.8 Nm (7.0 lb.-in.) torque
Note:
Adjacent terminals may be labeled
differently, depending on the model
number.
Note:
To prevent damage to the control-
ler, do not connect wires to unused
terminals.
Note:
Maintain electrical isolation between
analog input 1, digital input-outputs,
switched dc/open collector outputs
and process outputs to prevent
ground loops.
Note:
The control output common termi-
nal and the digital common terminal
are referenced to different voltages
and must remain isolated.
Note:
This Equipment is suitable for use in
CLASS I, DIVISION 2, Groups A, B,
C and D or Non-Hazardous locations
only. Temperature Code T4A
Warning:
ç
Explosion Hazard - Dry contact clo-
sure Digital Inputs shall not be used
in Class I Division 2 Hazardous Loca-
tions unless switch used is approved
for this application.
Warning:
ç
Explosion Hazard – Substitution of
component may impair suitability
for CLASS I, DIVISION 2.
Warning:
ç
Explosion Hazard - Do not discon-
nect while the circuit is live or
unless the area is known to be free
of ignitable concentrations of flam-
mable substances.
Green The device is operating normally.
Profibus DP Communications
485 T-/R-
+5Vdc Voltage Potential
VP
B
A
DG
trB
B
A
trA
Slot B & E
485 T+/R+
Digital ground
Termination resistor B
485 T+/R+
485 T-/R-
Termination resistor A
• WireT-/R-totheAtermi-
nal of the EIA-485 port.
• WireT+/R+totheBtermi-
nal of the EIA-485 port.
• WireDigitalGroundtothe
common terminal of the
EIA-485 port.
• Donotroutenetworkwires
with power wires. Connect
network wires in daisy-
chain fashion when con-
necting multiple devices in
a network.
• Aterminationresistor
should be used if this con-
trol is the last one on the
network.
•Ifusinga150ΩcableWat-
low provides internal termi-
nation. Place a jumper
across pins trB and B and
trA and A.
• If external termination is
tobeusedwitha150Ω
cableplacea390Ωresis-
tor across pins VP and B, a
220Ωresistoracrosspins
B and A, and lastly, place a
390Ωresistoracrosspins
DG and A.
• Donotconnectmorethan
32 EZ-ZONE PM control-
lers on any given segment.
• MaximumEIA-485network
length: 1,200 meters (4,000
feet)
• 1/8thunitloadonEIA-485
bus.
• Communications instance 2
Slot B: PM [6] _ _ _ _-[6] _ _
_ _ _ _
Slot E: PM [4, 8, 9] _ _ _ _-[6]
_ _ _ _ _ _
Profibus Terminal EIA/TIA-485 Name
Watlow Terminal
Label
Function
VP (Voltage Potential) - - - - VP +5Vdc
B-Line B B T+/R+
A-Line A A T-/R-
DP-GND common DG common
Profibus DP LED Indicators
Viewing the unit from the front and then looking on top of the controller two
bi-color LEDs can be seen where only the front one is used. Definition follows:
Closest to the Front
Indicator LED Description
Red Profibus network not detected
Red
Flashing
Indicates that the Profibus card is waiting for data
exchange.
Green Data exchange mode