LEGRAND NUMERIC HP i 33 40 kVA Series User Manual page 18

Note:
The definition for MODBUS port is as follows: pin3 is A, pin6 is B.
The definition for RS485 port is as follows: pin1 is A, pin8 is B.
The monitor card contains 6 standard dry contact ports (3 ports are input dry contact, the others are output dry
contact), detailed definition is as shown in Table 2-4 and Table 2-5.
Table 2-4. Standard output dry contact illustration
No. Silk-screen
1 ND1
2 ND2
3 ND3
Table 2-5. Output dry contact function illustration
No. Silk-screen
1 EPO1
2 EPO2
3 ND4
11
Signal
UPS FAULT signal
Mains FAIL signal
BAT. LOW signal
Signal
External EPO normal open input
signal
External EPO normal closed input
signal
It can be set to external battery breaker
or external maintenance bypass breaker.
Function illustration
When the signal is valid, COM and NO is
closed, COM and NC is opened. The
allowable voltage-withstand is 250 V/1A.
Function illustration
When the signal is valid, NO and
COM is short-circuit.
When the signal is valid, NC and
COM is open-circuit.
When the signal is valid, NO and COM
is short-circuit.