F7861/7862; F7900/7901/7910/7950 - Siemens SINAMICS G150 Operating Manual

Diagnosis / Faults and Alarms
Cause: BICO signal external fault triggered.
See also: p2106
Remedy: Eliminate the causes of this fault.
Acknowl.: Immediate
F7861
External fault 2
Reaction: OFF2
Cause: BICO signal external fault triggered.
See also: p2107
Remedy: Eliminate the causes of this fault.
Acknowl.: Immediate
F7862
External fault 3
Reaction: OFF2
Cause: BICO signal external fault triggered.
See also: p2108
Remedy: Eliminate the causes of this fault.
Acknowl.: Immediate
F7900
Drive: Motor blocked
Reaction: OFF2
Cause: Motor operates longer at the torque limit than the time specified in p2177 and below the
speed threshold set in p2175.
Remedy: - Check free rotation of motor.
- Check torque limit: r1538 for positive direction of rotation, r1539 for negative direction of
rotation.
- Check setting parameters p2175 and p2177 and correct if necessary.
Acknowl.: Immediate
F7901
Drive: Motor overspeed
Reaction: OFF2
Cause: The maximum permissible positive or negative speed has been exceeded.
The maximum permissible positive speed is calculated as follows: Minimum(p1082,
CI:p1085) + p2162. The maximum permissible negative speed is calculated as follows:
Maximum(-p1082, CI:1088) - p2162.
Remedy: In positive direction:
-r1084 check and if nec. correct p1082, CI: p1085 and p2162.
In negative direction:
-r1087 check and if nec. correct p1082, CI: p1088 and p2162.
Acknowl.: Immediate
A7910
Drive: Motor Overtemperature
Cause: Motor temperature has exceeded the alarm threshold parameterized in p0604.
The reaction set in p0610 is initiated:
See also: p0610
Alarm value 1: No output current reduction.
(r2124): 2: Output current reduction active.
Remedy: - Check motor load.
- Check motor ambient temperature.
F7950
Drive: Motor parameter defective
Reaction: NONE
Cause: Wrong motor parameters have been entered during commissioning, e. g. p0300 = Motor
type = 0 = No motor.
See also: p0300, p0301, p0304, p0305, p0307, p0310, p0311, p0314, p0316, p0320, p0322,
p0323
Fault value Fault value contains affected parameter number.
(r0949):
10-36
11/03
SINAMICS G150
Operating Manual