50
Rev G
S6−
−−
−TR400 Diagnostics
System slowdown test
Overview
The system slowdown test, tests the functionality of the system as a whole.
System
slowdown test
To run the slowdown test on the system you must have the system up and running.
The system must be running faster then the relay setpoints you wish to test. This test
does not require the user to change the setpoints, and works on underspeed setpoints
only. Activating the test on the TR400 slowly scales down the actual input frequency
to ramp down the display and trigger the relays, (simulating a real slowdown while
running at normal speed). This verifies all aspects of the system. Releasing the (.)
decimal point key at any time restores the system to a normal state. To initiate the
test follow the steps below:
Step Action
1 Press the (
) decimal key and hold it down.
2 The displayed RPMs will start to decrement after 1.5 sec.
3 The alarm Setpoint will go off and the alarm should sound. This should
occur (2-6 seconds) after starting the test depending on the operating
speed. These times are based on the operating speeds of 50RPM to
200RPM. The test will work at all speeds but time will be greater or less
than those shown.
4 The shutdown Setpoint will go off and the system should shut down. (3-8
seconds) after starting the test depending on the operating speed.
5 Test complete release the decimal key
Note:
This test in this form is available on versions 20.22 and later.
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