INVT HT33 Series

-18-
HT33 Series User Manual
J10
U
T
I
_
F
A
I
L
_
N
C
U
T
I
_
F
A
I
L
_
N
O
G
N
D
Fig 2-13 Mains failure warning dry contact interface diagram
Table 2-8 Mains failure warning dry contact interface description
Position
Name
Purpose
J10.1
UTI_FAIL_NC
Mains failure warning relay(normally closed) will be open during warning
J10.2
UTI_FAIL_NO
Mains failure warning relay( normally open) will be closed during warning
J10.3
GND
Centre of mains failure warning relay
2.6.8 RS232 Port and SNMP Card Port
RS232 and RS485 Port: provide serial data which can be used for commissioning and maintenance
by authorized engineers or maintainers, or can be used for networking or integrated monitoring system in
the service room.
SNMP Card Port: used for field installation of the communication option card (SNMP card).