January 2012 6.17 Monitoring Functions 971
Interrogation
through
PLC module
Module 9160 Status request of temperature monitoring and I
2
t
monitoring
The I
2
t monitoring reported by the module is given with respect to the first I
2
t
monitor response (power module or motor) if both I
2
t monitors are activated
(MP_motFactorI2t and MP_ampFactorI2t). This early warning is withdrawn as
soon as the limit for reset is reached. For the response behavior, see "Limit
values" on page 969.
Constraints:
Unconnected axes respond with all error bits as 0.
The I²t monitoring responds when the current value exceeds 110% of the
rated current.
After an e-function, the current is limited to 110 % of I
noml
. The time
constant for this is approx. 2.56 seconds.
The response time for the I²t monitoring at 2 · I
noml
without preload is
approx. 2.1 seconds. With a nominal load hysteresis every 10 seconds the
monitoring responds after approx. 200 ms.
The message "I²t early warning" is set approx. 200 ms before limitation
starts. The message "I²t monitoring" appears when limitation is activated.
Only the I²t early warning is possible for the spindle axis.
Call:
CM 9160
PL D <>Temperature monitoring>
Bit 15876543210
Axis:Sxxxxx987654321
PL D <> I2t monitoring I²t early warning>
Bit 15876543210 15 876543210
Axis Sxxxxx987654321 Sxxxxx987654321
Error recognition:
Marker Value Meaning
M4203 0 No error
1 Control has no current controller
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