BECKHOFF AX2500 - Manual (Page 28)

6.8.3 Implementation of the Stop Category 0
Bringing the motor to a standstill by immediately switching off the amplifier power supply
(STOPMODE & ACTFAULT parameters set to 1). The switching sequence is unambig-
uously fixed by the circuit, and must be followed, to prevent undesirable error signals and
failure of the servo amplifier.
It is not possible to achieve a Category 0 shut-down with the servo amplifier alone, since
hard-wired electromechanical components are compulsory for this type of disconnection.
A brake that is built into the motor must have an additional electromechanical control cir-
cuit, as well as the control through the AX25xx, in order to meet Category 0.
Normally, a brake in a servo motor only has the function of a holding brake. To ensure an
emergency stop function, the braking torque that is required must be checked. If the hold-
ing brake fulfills the dynamic requirements, it must be taken into acount that this applica-
tion will cause increased wear.
Circuit suggestion
(with EMERGENCY STOP Category 0, control function with contactor relays)
28 AX2500 Product Manual
Technical description
06/2007
BECKHOFF
AX2500