3300/16 Dual Vibration Monitor Operation Manual
26
15. Test Alarms
15.1 Test Equipment Setup
1. Disconnect
the
COM
and
IN
wiring from the channel A terminals on the Signal Input
Relay Module.
2. Connect the multimeter and the function generator (at 100 Hz and -9 Vdc bias) as
shown above.
•
In the event the function generator cannot supply the necessary DC offset, a floating DC
Power Supply will need to be connected in series with the function generator. Connect
the positive terminals of the function generator and power supply, connect the negative
terminal of the power supply to
IN
signal and the negative terminal of the function
generator to the
COM
signal.
•
NOTE: the DC offset must be within the gap alarm setpoint window to avoid tripping the
Gap alarm. If the recommended -9 Vdc offset is not within this window, adjust the
function generator accordingly.
Caution
Tests will exceed alarm setpoint
levels and cause alarms to
activate. Relay contacts may
change state. See Danger
Bypass section 14.
WARNING
High voltage present.
Contact could cause shock,
burns or death.
Do not touch exposed wires
or terminals.
