Installation continued, BWiring, AC Power Wiring

2 Installation continued

BWiring

Electrical wiring must comply with all applicable codes. Plant equipment that may be involved and operating conditions should be discussed with local operating personnel to determine if any special needs should be taken into account.

Nearly all start-up problems are due to improper wiring or monitor configuration. Please follow these guidelines carefully. Figure 2 presents a wiring diagram for the Manning GM-1.

AC Power Wiring:

•Use only stranded cable for AC power, relay outputs, and sensor input cables.

•The units must have a proper third wire ground for safety and sensor shielding. Be sure to follow local codes.

•All AC cables must be kept away from the incoming sensor cables, i.e., do not put AC cables inside conduit containing sensor cables.

•Keep all wiring away from variable speed drives and SCR control units to minimize electrical noise exposure.

•Electrical Power: 120 VAC, 50/60 Hz, 0.35 amps.

•Electrical power ground: The unit must be properly grounded.

Risk of electric shock.

Relay Wiring:

All three relays have Form C, dry contacts. Any required power source must be within the 3 amp rating and fused or current limited to keep from damaging the contacts.

•Relay wiring must be run in separate conduit from the sensor cable if the relay circuit is AC.

Sensor Wiring:

•See sensor manual for proper sensor cable.

•See sensor manual for proper sensor location.

•Never run AC circuits in the same conduit as the sensor cable.

Note: Relays are energized in a non-alarmed condition so that a power loss in the Manning GM- 1 will result in an alarm.