8. Bend the cable braid over the seal insert so that it will make contact with metal when the
cable gland is tightened.
9. Push the outer nut and the seal insert against the contact socket of the gland and tighten
the outer nut.
10. Inside the power supply unit, connect the wires to terminal block X4:
Table 6 Terminal block X4 wiring
Signal Wire color
Vaisala cable CBL210539
Terminal
Relay 1 control + White 2
Relay 1 control − Brown 3
Relay 2 control + Green 5
Relay 2 control − Yellow 6
Relay 3 control + Grey 8
Relay 3 control − Pink 9
YEL
GRN
PNK
GRY
Relay 1
Relay 2
Relay 3
2
1
Figure 19 Terminal block X4 wiring
OPT100 Installation Guide M211857EN-R
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