O & M Manual – Insulated Case ATS Rev: October 2020
Publication Number:
MN0100700E
Version: V10.01.20
Page 67
Table 24 - DSE2157 Fault Diagnosis
Fault Indications
Suggestion
Relays don’t Activate on the 2157 Board
Ensure the host controller is correctly
configured to send signals to the DSE2157
Power LED Indication Does Not Illuminate
Check polarity and size of the connected
DC supply are within the specifications of
the DSE2157
Power LED Flashes
This means the communications link to the
host controller has been lost.
Check the connection of the DSEnet paying
particular attention to the cable type being
used and the positioning of the termination
resistors.
Please contact Lake Shore Electric Technical Support if unable to resolve the expansion boards
problem.
7.3.3.
DSE2548 – LED Annunciator Expansion Board
Figure 49 - DSE2548 Controls and Indications