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Safety
Kollmorgen
11/2018
Automatic restart
The drive might restart automatically after power on, voltage dip or interruption of the sup-
ply voltage, depending on the parameter setting. Risk of death or serious injury for
humans working in the machine. If the parameter
AENA
is set to 1, then place a warning
sign to the machine (Warning: Automatic Restart at Power On) and ensure, that power on
is not possible, while humans are in a dangerous zone of the machine. In case of using
an undervoltage protection device, you must observe EN 60204-1:2006 chapter 7.5.
Hot surface!
The surfaces of the servo amplifiers can be hot in operation. Risk of minor burns!
The surface temperature can exceed 80°C. Measure the temperature, and wait until the
motor has cooled down below 40°C before touching it.
Earthing!
It is vital that you ensure that the servo amplifiers are safely earthed to the PE (protective
earth) busbar in the switch cabinet. Risk of electric shock. Without low-resistance
earthing no personal protection can be guaranteed and there is a risk of death from elec-
tric shock.
Leakage Current!
Since the leakage current to PE is more than 3.5 mA, in compliance with IEC61800-5-1
the PE connection must either be doubled or a connecting cable with a cross-section >10
mm² must be used. Deviating measures according to regional standards might be possi-
ble.
High voltages!
The equipment produces high electric voltages up to 900V. During operation, servo
amplifiers may have uncovered live sections, according to their level of enclosure protec-
tion. Capacitors can have dangerous voltages present up to ten minutes after switching
off the supply power. There is a risk of death or severe injury from touching exposed con-
tacts. Keep all covers and cabinet doors closed during operation. Touching the equip-
ment is allowed during installation and commissioning for properly qualified persons only.
There is a danger of electrical arcing when disconnecting connectors, because capacitors
can still have dangerous voltages present up to ten minutes after switching off the supply
power. Risk of burns and blinding. Wait at least ten minutes after disconnecting the servo
amplifiers from the main supply power before touching potentially live sections of the
equipment (such as contacts) or removing any connections. Always measure the voltage
in the DC bus link and wait until the voltage is below 50V before handling components.
Reinforced Insulation!
Thermal sensors, motor holding brakes and feedback systems built into the connected
motor must have reinforced insulation (according to IEC61800-5-1) against system com-
ponents with power voltage, according to the required application test voltage. All
Kollmorgen components meet these requirements.
Never modify the servo amplifiers!
It is not allowed to modify the servo amplifiers without permission by the manufacturer.
Opening the housing causes loss of warranty and all certificates become unvalid.
Warning signs are added to the device housing. If these signs are damaged, they must
be replaced immediately.
12
S748-S772 Instructions Manual
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