Datasheet

6 Specifications are subject to change without notice EM24 DIN DS 260315
EM24 DIN
Number of inputs 3
Input frequency 20Hz max, duty cycle 50%
Prescaler adjustment From 0.001 to 999.9 m
3
or
kWh per pulse
Contact measuring voltage 5VDC +/- 5%
Contact measuring current 10mA max
Input impedance 680Ω
Contact resistance ≤100Ω, closed contact
≥500kΩ, open contact
Working modes
(DP version excluded) Selectable:
• total and partial energy
meters (kWh and kvarh)
without digital inputs;
• total and partial energy
meters (kWh and kvarh)
managed by time periods
(t1-t2-t3-t4), W dmd syn-
chronisation (the synchro-
Digital input specifications
nisation is made every time
the tariff changes) and
GAS (m
3
) or WATER (hot-
cold m
3
) or remote heating
(kWh) meters or external
kWh meter;
• total and partial energy
meters (kWh and kvarh)
managed by time periods
(t1-t2), W dmd synchroni-
sation (the synchronisation
is made independently
from the tariff selection)
and GAS (m
3
) or WATER
(hot-cold m
3
) or remote
heating (kWh) meters or
external kWh meter;
• total energy (kWh, kvarh)
and GAS, WATER (hot-cold
M1 to N8 (4
th
group of 16
variables)
O1 to P8 (5
th
group of 16 vari-
ables)
Available variables All, except for the “max”
variables
Synchro/Tariff input
Used Dupline functions Monostable (push-button)
Realtime
Used channels A5
Working mode Selectable:
• none
• Wdmd synchronization
• total and partial energy
meter (kWh, kvarh) managed
by time periods (t1-t2).
Alarms
Used Dupline function Monostable (push-button)
Used channells Selectable (A1 to P8). No
control that the selected
channels are not used for
counters or analog vari-
ables.
Number of alarms 2 per instrument
Alarm modes Up alarm, down alarm (see
the table “List of the
variables that can be
connected to”)
Set-point adjustment From 0 to 100% of the dis-
play scale
Hysteresis From 0 to full scale
On-time delay 0 to 255s
Output status Normally energised
Available variables All, except for the “max”
variables
Counters
Used Dupline function Multiplexer for counter val-
ues
Number of counters 6 per instrument,
128 per network
Counter range 0... 99 999 999
Used channels B to F
Multiplexer B2 to B8
Reset B1
Value C1 to F8
Counter reset Enable/disable function for
all the counters
Available counters kWh tot, -kWh tot,
kvarh tot, -kvarh tot,
kWh t1, kWh t2,
kWh L1, kWh L2, kWh L3,
counter dig. in. 1,
counter dig. in. 2,
counter dig. in. 3,
hour counter.
Analogue variables
Used Dupline function Multiplexer for analogue
values
Number of variables 8 per instrument
80 per network
Dupline data format 3 1/2 DGT BCD
Full scale value Selectable from 1.999 to
1999M
Used channels depending on the number
of variables
Multiplexer A1 to A4
Value G1 to H8 (1
st
group of 16
variables)
I1 to J8 (2
nd
group of 16
variables)
K1 to L8 (3
th
group of 16
variables)
Dupline specifications