Marathon TSC 900 User Manual

TSC 900 TRANSFER SWITCH CONTROLLER
PM 151 REV 1 15/10/08 Thomson Power Systems
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5.15.8. FAIL TO UNLOAD TIMER (CTTS MODEL 4)
When the ATS is ordered with a Closed Transition soft-load option (i.e. ATS Model
Code Digit #13 “Operation Type” 4), a fail to unload alarm time delay feature is
available. When the Fail to Unload alarm feature is enabled (refer to Section #5.10.3),
this timer is programmed to allow the desired amount of time for a normal soft-unload
process to occur following a closed transition transfer operation. Should the pre-
programmed time expire before the source “unloaded” confirmation digital input signals
are received transfer during a closed transition, an alarm will be posted. The alarm
shall also activate the common TSC 900 "Transfer Fail" alarm output.

Marathon TSC 900 Specifications

General

Brand	Marathon
Model	TSC 900
Category	Controller
Language	English