TT8900 OPT
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Installation and Service Manual
Page 36 of 41
5.5
Replacing the T20 TSM Module
Tools Required: Flat head screwdriver.
In the unfortunate event the T20 TSM module needs to be replaced, follow these steps to
complete the swap and resume normal operations:
1.
Open the TT8900 OPT door using the commissioned key.
2.
Power off the UPS battery then, disconnect the TT8900 OPT unit from the mains power.
3.
Remove the T20 TSM P1, P2, P3 and P4 connector banks, using a flat head screwdriver.
4.
Disconnect the Ethernet cable.
5.
Using the same flat head screwdriver, pull out both orange tabs keeping the T20 TSM
module attached to the DIN rail.
6.
Pull out the T20 TSM module.
7.
Install the new T20 SCM module, undoing steps 4-1.
Important: Make sure to match the
Setup SW1
dip switches to the old module.
8.
Once the front door is closed, turn on the power and resume your TT8900 OPT activity.
Note: Make sure to properly align the P1 -P4 connector banks when replacing a T20 TSM
module. Misaligning will result in faulty behaviour.
Figure 25: T20 TSM Module Replacement