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6 Description of the Functions
6.1
Operating mode, speed/torque setpoint (P0700 = 1)
DC link
monitoring
Table 6-6
Parameters for the DC link monitoring
No.
1604
DC link undervoltage warning threshold
... specifies the DC link undervoltage warning threshold V
toring V
> V
DC link
Note:
The DC link voltage is sensed by the NE module or a monitoring module, and can also be out-
put as analog signal (0 – 10 V) via an analog output.
6-344
The DC link of the drive system is monitored for an undervoltage condi-
tion.
The set DC link undervoltage warning threshold in P1604 is monitored
and the monitoring result is displayed via the "DC link monitoring V
> V
output signal.
link
x
The DC link voltage is generally monitored in the NE modules. If the
fixed monitoring limits are exceeded or fallen below, then the NE mod-
ule automatically carries out shutdown operations.
Parameters
Name
".
x
From SW 4.1, the following monitoring functions/warnings are available
for the DC link voltage, which result in the drive being powered down
(tripped):
S
Monitoring the DC link for an overvoltage condition
Threshold: P1163 "Max. DC link voltage"
Fault 617, if the DC link voltage, when the pulses are enabled, is
greater than the threshold. The shutdown response can be config-
ured using P1613 bit 16 or 17.
S
Monitoring for a DC link undervoltage condition
Threshold: P1162 "Minimum DC link voltage"
Defines the permissible lower limit for the DC link voltage.
Fault 616 is generated if the DC link voltage when setting the enable
signals is less than the threshold. The monitoring only becomes ac-
tive if V
(P1701) has at least fallen below the value in P1162
DC link
once.
The shutdown response to fault 616 can be configured using P1613
bit 16 or 17.
If the standard value is entered in P1162/P1163, then the appropriate
monitoring is inactive.
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Min.
Standard
Max.
0
200
680
to output the signal "DC link moni-
x
E Siemens AG 2005 All Rights Reserved
01.99
10.04
DC
Units
Effective
V(pk)
Immedi-
ately
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