jotron MPA 1600, User And Installation Manual, Page: 18 / 62

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User and Installation Manual
Compact MPA
4.12 CABINET POWER
TERMINAL CONNECTIONS
4.12.1 AC + DC VERSION
The primary power source for the Compact MPA Cabinet is 230VAC with 24VDC as backup.
TB1 TB2
1
230VAC
Live
1
24VDC 2 2
3 3
4
230VAC
Neutral
4 24VDC (fuse)
5 5
0VDC 6 6
7
PE
GND
7
8 8 0VDC (fuse)
9 9
PE
GND
TB3 10
1 MPA 24VDC backup (supplied from 1671)
2 MPA 0VDC backup (supplied from 1671)
4.12.2 AC + AC VERSION
The primary power source for the Compact MPA Cabinet is 230VAC with additional 230VAC as backup.
TB1 TB2
1
230VAC
Live
1
2230VAC
Live
2 2
3 3
4
230VAC
Neutral
4
230VAC
Neutral
5 5
6 6
7
PE
GND
7
PE
GND
8 8
9 9
TB3 10
1 MPA 24VDC backup (supplied from 1671)
2 MPA 0VDC backup (supplied from 1671)
4.13 CABINET POWER
FAILURE RELAY CONNECTIONS
The power failure relays K1 and K2 are DPDT relays with one pole on 11, 12 and 14 and the other pole on 21, 22 and 24.
K1 K2
11 Primary power fail – Common contact 21 11 Secondary power fail – Common contact 21
12 Primary power fail – NC contact 22 12 Secondary power fail – NC contact 22
14 Primary power fail – NO contact 24 14 Secondary power fail – NO contact 24