Assembly and Commissioning Instructions Servo amplifier D1-N 15.10.2015
Undertaking a category 1 stop
To undertake a category 1 stop, a separate safety module is needed. A correspond-
ing example circuit is shown in Figure 6.9.
Figure 6.9: Example of circuit for stop category 1
When the emergency stop button is pressed, a category 1 emergency stop is trig-
gered. Firstly and with no delay, the motor enable at D1-N is removed via the Q1
output of the safety module (single-channel, not monitored). As a result, the motor
is decelerated with the “Dec. Kill” and “Smooth factor” parameters.
Once the delay time set on the safety module has passed, the STO safety function is
activated via the safety module's Q3 and Q4 outputs and the limit stage therefore
deactivated. No more energy can therefore be supplied to the motor.
If the motor has still not come to a stop after the delay time set on the safety
module, this may result in uncontrolled movements once the STO function is
triggered.
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