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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 or circuit breakers can be used. Place this device
in close proximity to the meter 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 common installation
configurations.
Net Import and Export Energy
Separate import and export pulses to track positive and
negative energy:
2
1
2
Pulse Out 1
Common
Pulse Out 2
Pulse Input
Pulse Input
Digital GND
Pulse Counter
Import energy
Export energy
Import Energy Only
Track only import energy. Could also be inversely wired to track
only export energy by wiring the pulse input to output 2:
2
1
2
Pulse Out 1
Common
Pulse Out 2
Pulse Input
Digital GND
Pulse Counter
Import energy
Total Import and Export Energy
For total (import and export) energy, jumper output 1 and
output 2 together (useful in the case that one or more of the
CVTs were installed in the incorrect orientation to load, or the
controller has only one pulse counter available):
2
1
2
Pulse Out 1
Common
Pulse Out 2
Pulse Input
Digital GND
Pulse Counter
Import energy
Export energy
Total Energy (Import and Export) and Alarm
The EM-PULSE has an optional alarm mode. If the alarm is
manually configured on, the meter will combine the total
import and export energy through output 1. Output 2 will be a
normally open alarm. See
Section 7.2 - Configuration Settings
for
further details on
Pulse/Alarm Options
:
2
1
2
Pulse Out 1
Common
Pulse Out 2
Pulse Input
Alarm N.O.
Digital GND
Pulse Counter
Alarm
Total Energy
(Import & Export)
DAISY CHAIN WIRING EXAMPLE
The EM-PULSE is capable of accepting pulse inputs from
another meter. It will aggregate the pulses and report them.
The meters must all be set with the same pulse scale.
2
1
1
2
Power
Ground
Pulse In 1
Pulse In Ground
Pulse In 2
Pulse Out 1
Pulse Out Common
Pulse Out 2
2
1
1
2
Power
Ground
Pulse In 1
Pulse In Ground
Pulse In 2
Pulse Out 1
Pulse Out Common
Pulse Out 2
Pulse Input
Pulse Input
Digital GND
Pulse Counter
Import energy
Export energy
Addi�onal Meter
Pulse Inputs
!
Do not exceed the maximum pulse rate of each meter when
multiple meters are aggregated.
TYPICAL 3Ø WIRING 85 to 600VAC
2
1
1
2
Power
Ground
Pulse Input 1
Pulse In Ground
Pulse Input 2
Pulse Output 1
Pulse Out Common
12-30VDC/24VAC
1
Import energy pulse input
Pulse input ground
Export energy pulse input
Export energy pulse output
Import energy pulse output
Pulse output common
Pulse Out
3
Pulse In
2
Pulse Output 2
T
S
R
L1
L2
L3
N
Fuse/disconnect
method.
See instructions
above
White
Black
or color
600V Insulated
Communications
cable
L1
L2
L3
N
LOAD
TYPICAL 1Ø WIRING
For 3Ø
r
connections with no neutral, cap each CVT’s
neutral (white) wire.
METER BASE WIRING
1
One side of transformer secondary is connected to signal common.
Dedicated transformer is recommended.
2
Pulse inputs accept energy at the same pulse scale as the meter output
pulse scale setting. 1 pulse in = 1 pulse out.
3
Open collector, 75mA max, 40V max.
T
S
R
EM
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UL
SE
2
1
1
2
Li
ne
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ta
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s
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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
