2
2
2.1 INSTALLING THE DUAL-RELAY OPTION BOARD
To install the dual-relay option board, follow these steps (refer to the Figure 2-1):
!
CAUTION: The meter has no power-on switch, so it will be in operation
as soon as you apply power.
!
IMPORTANT: Disconnect the power from the unit before installing this
option board.
1.
Hold the board in a horizontal position, with the TB3 connector facing towards the
rear of the meter.
2.
Line up the 3 connectors located on the back side of the board with pin groups J3, J4
and J5 on the mother card.
3.
Push connectors down to secure on relay board.
Figure 2-1. Dual-Relay Option Board
NC1 N01 CM1 NC2 NO2 CM2
1
2
3
4
5
6
TB3/RELAY
RELAY BD
MAIN BD
1 2
3
TB1
1 2
3
4 5
6
1
2
3
4
5
6
TB2
S1
OPE
N
CLO
SED
1 2
3
4
5
6
7
8
9
10
2
1
2
1
2
1
J4
J3
J5
TB3
S5
AB