11 Interface for NZM compact circuit-breakers
11.2 Surface mounting
230 SmartWire-DT module IP20 01/20 MN05006001Z-EN www.eaton.com
11.2.3 Input points
• I0
The HIN slot (middle and right auxiliary contact socket of the NZM) is fit-
ted with an N/O contact and wired between terminals 24V and I0. It is
responsible for the “on” or “off” switch position.
• I1
The HIA slot (left auxiliary contact socket of the NZM) is fitted with an N/
C contact and wired between terminals 24V and I1. It is responsible for
the trip indication.
The inputs I0 and I1 are shown in the following table according to the PNO
profile for switchgear, and are mapped to the status data in byte 1:
11.2.3.1 Energy signal inputs S0+ and S0-
These external inputs are wired to an external energy measuring module,
such as the NZM…XMC-S0. The measuring module supplies an S0 pulse for
a specific amount of energy, which increments a retentive counter on the
NZM-SWD-704. From this count, which has a size of 32 bits, the consumed
energy can be derived.
Figure 88: Connection of the S0 input
If the counter input is not required, terminals S0+ and S0- must be provided
with a wire bridge. This suppresses a starting pulse when the power supply
is switched on.
Input points Data
CB status, byte 1, bit 2 + 3
Init Off On Trip
00 01 10 11
I0 – 0 1 0
I1
– 1 1 0
￫
The 1.5-kΩ-resistor is permanently integrated in the NZM-
XSWD-704 device.
S0+
S0-
1.5 K
+24 V
NZM-XSWD-704
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