5
INM9120 Rev 8
2 .3
SIGNAL AND POWER CONNECTIONS
2 .3 .1 General
All units have removable signal and power plugs. The plugs can be supplied with either screw-clamp
(912X–IS–
PS
) or sprung cage-clamp (912X–IS–
PC
) terminals as shown in figure 5.
The user can decide whether it will be easier to wire the power supply with the connector plugs in-
situ, or to remove them. If the connectors are removed for wiring, ensure that the correct one is being
wired; the plugs use a mechanical key system to prevent accidental cross connection - they are NOT
interchangeable.
Ensure that enough cable is provided to permit future removal of the plugs for maintenance or
replacement.
To remove a connector plug insert a screwdriver blade behind it as shown in figure 6 and lever the
connector gently outwards.
Figure 5 - Spring clamp and screw clamp plugs
.
Figure 6 - Removing power and signal connectors .
The conductors or ferrules used with these connectors should be between 14 and 24 AWG (1.6 and
0.5mm dia) in size. If two large conductors need to be accommodated, e.g. two -ve connections on the
Power connector, then a twin ferrule should be used.
