9
Operation
Protection and monitoring functions
Operating Instructions – Compact Extra-Low Voltage Drives
68
9.3
Protection and monitoring functions
Integrated monitoring functions protect the compact extra-low voltage drive from per-
manent damage. In the event of an error, the drive is powered off automatically (=
freely rotates).
Scope of functions:
• Temperature monitoring of the output stage
• Undervoltage monitoring
• Overvoltage monitoring
• Overcurrent limitation
• Overload protection through I
2
t
Properties
Value/comment
Temperature cut-off point for output stage
(hysteresis: 10 K)
120 °C
U
DC48V
overvoltage cut-out (hardware,
hysteresis: 1 V)
DC 63 V
U
DC48V
undervoltage auto restart (discon-
nection U
DC24V
at 16 V)
DC 18 V
Overload protection I
2
t (software)
yes
Hardware overcurrent protection circuit
as maximum winding current limitation
53 A
9.3.1
Acknowledging an error condition
• As soon as the monitoring function of the drive detects an error, the output stage is
disabled and disconnected from the power supply.
• If drives are equipped with an optional brake, this is engaged and prevents the dis-
abled drive from rotating.
• If the drive is blocked by one of the monitoring functions with an error message,
you will need to acknowledge this message.
• You can only acknowledge error messages if the error status is no longer present.
Overtemperature errors, for example, can only be acknowledged after a cooling
phase.
• By default, parameter P06 is set to "manual acknowledgment". This acknowledg-
ment can be issued via control inputs IN A or IN B.
• In the event of an error, you will need to set both inputs
IN
A and
IN
B to "0". The
acknowledgment is then issued via a rising edge at one of the two inputs
(IN
A OR
IN B).
• The drive is ready for operation again no later than
10
ms after a successful ac-
knowledgment.
26718014/EN – 11/2020
