Planet VC-2402-48 [17/35] Housekeeping and alarm contact output interface

Planet VC-2402-48 [17/35] Housekeeping and alarm contact output interface
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1.2.9 Housekeeping and Alarm Contact Output Interface
The VC-2402 has an RJ-50 port (HK) on the front panel to provide four
housekeeping inputs and one alarm contact output. Generally, housekeeping
contacts can connect to environment-sensor- controlled switch to indicate the
operation environment condition.
The HK circuit contains a photo coupler powered by the VC-2402 to detect the
“open” or “close status of the loop between HK_IN and HK_COM (user does not
need to feed 3.3v power into the circuit). As to the alarm output, there is a relay
between ALMOUT and ALMCOM to control the status of the loop to be “open” or
“close to the alarm equipment (close between ALMOUT and ALMCOM for alarm;
open if no alarm).
The pin assignment of housekeeping and alarm contact output interface is
illustrated below:
1 2 3 4 5 6 7 8 9 10
ALMOUT
HK1IN
HK1COM
HK2IN
HK3COM
HK4IN
HK4COM
ALMCOM
1
2
3
4
5
6
7
8
HK2COM
HK3IN
9
10
Pin assignment of Housekeeping Inputs and Alarm Contact Output

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