5
05.01
5.4 Main spindle control with analog setpoint interface 6SN1121–0BA1_–0AA_
5-116
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
5.4.2 Select relay functions/signals
The select relay terminals A11 to A61 (max. 6) can be freely programmed.
A control parameter is assigned to every select relay, in which the code number
of the selected function is entered.
Table 5-11 Select relay functions/signals
Select relay Function
n
act
=n
set
(ramp–up completed)
The relay pulls–in, if the ramp–up sequence has been completed after a setpoint step.
The signal is not withdrawn as a result of speed fluctuations due to load surges.
n
act
=n
set
(actual)
The relay pulls–in, if the actual value lies within a tolerance bandwidth of the setpoint.
Speed fluctuations due to load surges can cause the signal to be withdrawn.
|M
d
| < M
dx
The relay pulls–in, if the actual torque of the threshold, which can be parameterized, is
fallen below (this is suppressed during acceleration” after a time which can be para-
meterized).
|n
act
| < n
min
1) The relay pulls–in, if the speed actual value falls below the threshold which can be para-
meterized.
|n
act
| < n
x
The relay pulls–in, if the speed actual value falls below the threshold which can be para-
meterized.
Motor overtemperature
pre–alarm 1)
The relay drops out for an overtemperature condition. If the temperature continues to
increase, an additional fault signal is output and the pulses cancelled after a para-
meterizable time.
Heatsink overtempera-
ture alarm 1)
The relay drops out, if the main heatsink temperature switch of the power module
responds. After 20 s the drive shuts down and a fault signal is output.
Variable relay function
(max. 2 terminals) 1)
Any of the control program variables can be monitored using this function.
In position 1 The relay pulls–in, if the spindle is within tolerance bandwidth 1 after positioning has been
completed.
In position 2 The relay pulls–in, if the spindle is within tolerance bandwidth 2 after positioning has been
completed.
Relay, star operation An external auxiliary contactor can be controlled via this relay to changeover the winding
into the star configuration.
Relay, delta operation An external auxiliary contactor can be controlled via this relay to changeover the winding
into the delta configuration.
1) The signals/messages are only available in the HPC–axis mode.
5 Control Modules
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