TE-WILBUR OPERATIONS MANUAL REV 002.15 06/11/2015
Tisch Environmental 1-TSP-AND-PM10 firstname.lastname@example.org www.tisch-env.com Page 147 of 183
UPS does not switch to
battery during a power
Check voltage on DC(+) and DC(-) terminals
on UPS, should be 27VDC. Check the battery
(+) and (-) terminals, these should also be
Disconnect battery pack and measure voltage
from the battery pack. This should be 24VDC.
System does not stay
powered during loss of
Battery pack needs
Turn off mains power and measure the voltage
on the Battery (+) and (-) terminals. This
should be 24VDC. Ensure the battery pack is
fully charged by leaving it plugged in for 24
Ensure when mains power is on that the voltage
on the Battery (+) and (-) terminals is 27VDC,
this is necessary to properly charge the
Replace battery pack.
14.3 Touchscreen Troubleshooting
The touchscreen is TE-Wilbur part number TE-W-100. The touchscreen is
powered from the DC power supply and connects to the PLC via a
communication cable. The screen has an internal SD card that is located on
the left side when looking at the rear of the screen.
No DC power to
Check voltage on connector to the screen.
Should be 27VDC.
Check green LED on front of screen, should be
ON when voltage is present.
Message stating battery
Replace internal battery.