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3
Controls and Indicators
(continued)
Switches
Two switches are provided on the right side of the GSM to effectively
disconnect the relay coils from the inverters supply voltage (11 VDC), thus
preventing the relays from engaging if a control signal is sent out from the
inverter. This is a safety feature which allows the generator to be serviced
without it unexpectedly starting due to an inverter GEN-START command.
GENERATOR START Switch
The GENERATOR START switch enables the relays by providing the
operating voltage to the relay coils RY7 and RY8. When the relays are
enabled, they will respond to the control signals provided by the inverter.
When the switch is in the RELAYS DISABLED position, the inverter control
signals have no effect on relay operation (i.e., the COM and N.C. contacts
engage). This switch does not affect the operation of the LEDs which
continue to light whenever the inverter sends a CLOSE CONTACT
command to the relays.
INVERTER ERROR Switch
The INVERTER ERROR switch provides a simple way to test an
externally connected alarm. Once the alarm is tested, this switch should be
switched to the RELAY READY position.
Figure 3
Switches
1.0 INTRODUCTION
GENERATOR
Switch
(RY7 and RY8)
INVERTER ERROR
Switch (RY 11)
Summary of Contents for GSM - REV A
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