Siemens Sinumerik 840D sl Diagnostic Manual page 796

Overview of Alarms
SINAMICS-Alarms
207908 <location>Internal armature short-circuit active
Message -
value:
Drive object: SERVO, VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: The Motor Module signals that the motor is short-circuited through the power semiconductors (r1239.5
= 1). The pulses cannot be enabled. The internal armature short-circuit is selected (p1231 = 4):
Remedy: For synchronous motors, the armature short-circuit braking is activated if a 1 signal is present via
binector input p1230.
See also: p1230 (Armature short-circuit / DC brake activation), p1231 (Armature short-circuit / DC
brake configuration)
207909 <location>Internal voltage protection: De-activation only effective after
POWER ON
Message -
value:
Drive object: SERVO, VECTOR
Reaction: NONE
Acknowledge: POWER ON
Cause: The de-activation of the internal voltage protection (p1231 not equal to 3) only becomes effective after
POWER ON.
The status signal r1239.6 = 1 indicates that the internal voltage protection is ready.
Remedy: None necessary.
This a note for the user.
207910 <location>Drive: Motor overtemperature
Message %1
value:
Drive object: SERVO, VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: KTY:
The motor temperature has exceeded the fault threshold (p0604 or p0616).
VECTOR: The response parameterized in p0610 becomes active.
PTC:
The response threshold of 1650 Ohm was exceeded.
Alarm value (r2124, interpret decimal):
SME not selected in p0601:
1: No output current reduction.
2: Output current reduction active.
SME selected in p0601 (p0601 = 10):
The number specifies the sensor channel that resulted in the alarm being output.
See also: p0604 (Motor overtemperature alarm threshold), p0610 (Motor overtemperature response)
Remedy: - check the motor load.
- check the motor ambient temperature.
- check KTY84.
207913 <location>Excitation current outside the tolerance range
Message -
value:
Drive object: SERVO, VECTOR
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: The difference between the excitation current actual value and setpoint has exceeded the tolerance:
abs(r1641 - r1626) > p3201 + p3202
The cause of this fault is again reset for abs(r1641 - r1626) < p3201.
2-796
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG 2009 All Rights Reserved
03/2009