ELECTRICAL INSTALLATION — DC CONTROLWIRING
Control Wiring
The genset control box is located either on top or on the side of the alternator housing (see Figure 30 below). It contains connection points for remote control and monitor options which are located on the terminal block within the electronics box.
Stranded copper wire must be used for all customer connections to the electronics box. Solid copper wire may break due to vibration.
Remote Control / Monitor Connections
Customer remote control / monitor connections are attached to the terminal block. Optional equipment such as a remote annunciator panel, sensing devices used to monitor genset operation, remote start/stop switches, etc. are attached to this terminal block. Driver signals for customer supplied relays are also provided for several alarm and shutdown conditions.
When making connections to the terminal for customer control / monitor control functions, be sure the battery power is disconnected from the terminal block by removing the 5 amp control power fuse.
Terminal Block Wiring
Due to the wide variety of devices that can be attached to the relay outputs of terminal blocks, the electrical contractor must determine the gauge of stranded copper wire that is to be used at the relay connections.
Switched B+
Switched B+ is fused. See relay connection description.
Digital Connections
Digital connections to the genset controller should be terminated directly to the controller with the following requirements:
z18 gauge twisted pair cable with an overall shield
zOverall cable should include the number of twisted pairs as indicated on the customer connection diagram
zNetwork cable SHOULD NOT be run in the same conduit as the AC power output conductors
zLength should be 1000 feet maximum
Always run control circuit wiring in a separate metal conduit from AC power cables to avoid inducing currents that could cause problems within the control circuits.
Figure 30. Control Box Location
INDUSTRIAL GENERATOR SETS — APPLICATION & INSTALLATION MANUAL — REV. #4 (09/07/07) — PAGE 69