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Wiring
Provide a disconnect device to disconnect the meter from
the supply source. In the US and Canada, disconnecting fuse
holders can be used. Place this device in close proximity
to the equipment and within easy reach of the operator,
and mark it as the disconnecting device. The disconnecting
device shall meet the relevant requirements of IEC 60947-1
and IEC 60947-3 and shall be suitable for the application.
Provide overcurrent protection and disconnecting device for
supply conductors with approved current limiting devices
suitable for protecting the wiring.
PULSE OUTPUT WIRING OPTIONS
The four diagrams below detail wiring for postive energy,
positive and negative energy, positive energy and alarm, and
total energy.
Note on energy calculation: When the instantaneous net
energy is positive, it is reported as positive energy by the meter.
When instantaneous net energy is negative, it is reported as
negative energy by the meter.
Energy is calculated utilizing the following equation:
E = abs(R+S+T)
PULSE INPUT WIRING
The EM-PULSE is capable of accepting pulse inputs from other
devices and meters. It will aggregate the pulses and report
them.
Be sure not to exceed the pulse rating of your meter when
additional meters are aggregated.
TYPICAL 3Ø WIRING 85 to 600VAC
2
1
1
2
Power
Ground
Pulse Input
Pulse In Ground
Pulse Input
Pulse Output
Pulse Out Common
Pulse Output
12-30VDC/24VAC
1
Positive energy pulse input
Pulse input ground
Negative energy pulse input
Negative energy output
Positive energy pulse out
Pulse output common
Pulse Out
3
Pulse In
2
2
1
1
2
Power
Ground
Pulse In
Pulse In GND
Pulse In
Pulse Out
Pulse Out Com
Pulse Out
2
1
1
2
Power
Ground
Pulse In
Pulse In GND
Pulse In
Pulse Out
Pulse Out Com
Pulse Out
Pulse Input
Pulse Input
Digital GND
Pulse Counter
Positive energy
Neg. energy
Additional Meter
Pulse Inputs
For positive energy only
!
2
1
2
Pulse Out
Pulse Comm
Pulse Out
Pulse Input
Digital GND
Pulse Counter
Positive energy
2
1
2
Pulse Out
Pulse Comm
Pulse Out
Pulse Input
Digital GND
Pulse Counter
Positive energy
Neg. energy
Unsigned
2
1
2
Pulse Out
Pulse Comm
Pulse Out
Pulse Input
Pulse Input
Digital GND
Pulse Counter
Positive energy
Neg. energy
2
1
2
Pulse Out
Pulse Comm
Pulse Out
Pulse Input
Alarm N.C.
Digital GND
Pulse Counter
Positive energy
Alarm
Positive Energy
Positive and Negative Energy
Positive Energy and Alarm
Total Energy
T
S
R
L1
L2
L3
N
Fuse/disconnect
method.
See instructions
above
White
Black
or color
600V
Communications
cable
L1
L2
L3
N
LOAD
TYPICAL 1Ø WIRING
METER BASE WIRING
1
One side of transformer secondary is connected to signal common.
Dedicated transformer is recommended
2
Pulse inputs accumulate energy at the same pulse scale as the meter
output pulse scale setting
3
Open collector, 75mA max, 40V max
T
S
R
EM
-P
UL
SE
2
1
1
2
Li
ne
S
ta
tu
s
LE
D
De
vi
ce
St
at
us
LED
CVT
Stat
us LED
s
L1
A
L2
B
L3
C
R S T
EM
-P
UL
SE
2
1
1
2
Li
ne
S
ta
tu
s
LE
D
De
vi
ce
St
at
us
LED
CVT
Stat
us LED
s
L1
A
L2
B
L3
C
R S T
LOAD
