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PACMotion™ Rotary Servo Motors Installation and User Manual
GFK-3169B
Holding brake
All motors are optionally available with a holding brake. A spring applied brake (24V DC) is integrated
into the motors. When this brake is de-energized it blocks the rotor.
Secure hanging loads!
If there is a suspended load (vertical axes), the motor's holding brake is released, and, at the same time,
the servo drive does not produce any output, the load may fall down! Risk of injury exists for the
personnel operating the machine.
The user should consider required local safety standards in the case of hanging loads (vertical axes) and
the need to insure personnel safety by using additional safety measures for hazard avoidance.
Note: The holding brakes are designed as standstill brakes and are not suited for repeated operational
braking. In the case of frequent, operational braking, premature wear and failure of the holding brake is
to be expected.
The motor length increases when a holding brake is mounted.
The holding brake can be controlled directly by the servo amplifier (no personal safety !), the winding is
suppressed in the servo amplifier — additional circuitry is not required (see instruction manual of the
servo amplifier). If the holding brake is not controlled directly by the servo drive, an additional wiring
(e.g. varistor) is required. Consult our support department.
Brake data are listed in chapter "Technical Data Brakes" from (Section 7.7, Technical Data Brakes) .
Fan for IC830M7
For the IC830M7 model size, an add-on kit for forced ventilation is available. The integrated fan enables up
to 30% more power output for the IC830M7 motors. Assembly instructions for the fan kit is contained
within the scope of delivery of the add-on kit.
The fan housing can be mounted either with both the supplied brackets and spacers or with the brackets
only. The choice of mounting method depends on the application. If strong vibrations are expected, you
should use both brackets and spacers. Motors with integrated brakes require the longs spacers.
Figure 4: IC830M7
Note: Make sure, that free air flow is available for the fan. Keep a space of at least 25 mm behind the fan
guard.
The motors become dirty considerably faster due to forced convection. Dirt deposits lead to falling
cooling capacity and can put the motors at risk. Dust may burn in case of overheating. So clean the air
duct, the fan, and the motor at regular intervals.
By adding a fan, the mounting dimensions of IC830M7 motors increase.
In case of IC830M7 motors with connector option "C", winding "Q" and forced ventilation you must limit
the motor current to 23,5 A for connector protection.
You can find technical information on IC830M7 motors with fans (Section 7.6 Technical Data IC830M7
with fan).
You can find the dimensional drawing for IC830M7 motors with fans on (Section 8.5,
Dimensions/Radial Forces IC830M7 (KK flanges)).
Technical Description
Section 2
October 2020
16
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