Description of Controls
Page 67 of 90 057-233 ISSUE: 1
4.10.2 TEST OFF LOAD
Activate by pressing the Mode button repeatedly until Test off Load is shown on the display, then
press the Tick button to confirm the change. An LED indicator beside the button confirms this
action.
The Test off Load mode only starts S2 (if configured as a generator) and leave it off load.
4.10.2.1 STARTING SEQUENCE
As soon as the Mode is selected and confirmed by pressing the Tick button is pressed, the
output to give a start signal to an external generator controller is activated (if S2 is configured as a
generator)
If the generator fails to start during the S2 Fail Delay timer, an alarm appears on the display which
shows Fail to Start. S2 is seen as available once the supply is within limits (if configured as a mains
supply) or had achieved Loading Voltage and Loading Frequency (if configured as a generator).
4.10.2.2 S2 AVAILABLE
In Test Off Load mode, the load is not transferred to S2 unless a ‘loading request’ is made and the S2
supply is within limits (if configured as a mains supply) or has achieved loading voltage and frequency
(if configured as a generator).
A loading request can come from a number of sources.
• S1 supply out of limits
• Activation of an auxiliary input that has been configured to remote start on load
• Activation of the inbuilt exercise scheduler if configured for ‘on load’ runs.
NOTE: The load transfer signal remains inactive until S2 is seen as available. This
prevents loading to a supply that has failed or is not yet available.
As the load increases and decreases, the module may (depending upon configuration) remove non-
essential loads. This is configured as part of the Load Shedding control settings in the DSE
Configuration Suite Software.
See section entitled Load Shedding elsewhere in this document for further details.
4.10.2.3 STOPPING SEQUENCE
In Test off Load mode, S2 continues to run on load until either:
• Pressing the Start Inhibit button to return to Start Inhibit mode.
• Pressing the Auto button to return to Automatic mode.
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