Operating Instructions

Troubleshooting
Bypass
-
Specific Fault Codes
38
Siemens Industry, Inc. BT300 Bypass Operator's Manual DPD01391
Building Technologies 2017-09-28
Troubleshooting
Bypass-Specific Fault Codes
Table 4: Fault Codes.
Fault Code Fault ID Fault Name Possible Cause Possible Remedy
80 1080 Remote Safety 1 Digital input contact closure is
missing.
Verify the status of the digital input as defined by
Remote Safety 1 (P3.5.1.44).
1180 Remote Safety 2 N/A If not in use, set to a value of DigIN Slot0.2.
1280 Remote Safety 3 N/A Verify the status of the digital input as defined by
Remote Safety 2 (P3.5.1.45).
1380 Remote Safety 4 N/A If not in use, set to a value of DigIN Slot0.2.
1480 Remote Safety 5 N/A Verify the status of the digital input as defined by
Remote Safety 3 (P3.5.1.46).
1580 Remote Safety 6 N/A If not in use, set to a value of DigIN Slot0.2.
1680 Remote Safety 7 N/A Verify the status of the digital input as defined by
Remote Safety 4 (P3.5.1.47).
1780 Remote Safety 8 N/A If not in use, set to a value of DigIN Slot0.2.
81 1081 Overload Overload relay located in bypass
cabinet has triggered.
Verify the status of the digital input as defined by
Remote Safety 5 (P3.5.1.48).
82 1082 Bypass Not Possible The BT300-OPT-B5-V option
board is missing, and Bypass
(P3.17.4) is set to Electronic.
If not in use, set to a value of DigIN Slot0.2.
General Bypass
Problem Description Possible Cause
Contactors do not close.
● Main input circuit protection has opened.
● Control power fuse has opened.
● Safety circuit is open.
● Motor overload must be reset.
● Loose control wire connection.
Main input fuses blow when the motor
is run in bypass.
The short circuit protection supplied by the factory is
approximately 1.5 times the NEC listed motor current rating.
Some applications and motor characteristics may require up-
sizing this protection. If this is required in the field, ensure that
there is an appropriate match between the types of fuses and
rating with the fuse holder.