Electrical Installation; Safety Instructions - Kollmorgen SERVOSTAR 640 Instruction Manual

Kollmorgen
8

Electrical Installation

8.1

Safety Instructions

Never undo any electrical connections to the servo amplifier while it is live. There
is a danger of electrical arcing with damage to contacts and serious personal
injury. Wait at least five minutes after disconnecting the servo amplifier from the
main supply power before touching potentially live sections of the equipment (e.g.
contacts) or undoing any connections.
Capacitors can still have dangerous voltages present up to five minutes after
switching off the supply power. To be sure, measure the voltage in the DC Bus link
and wait until it has fallen below 40V.
Control and power connections can still be live, even if the motor is not rotating.
Wrong mains voltage, unsuitable motor or wrong wiring will damage the amplifier.
Check the combination of servo amplifier and motor. Compare the rated voltage
and current of the units. Implement the wiring according to the connection diagram
on page 39.
Make sure that the maximum permissible rated voltage at the terminals L1, L2, L3
or +DC, –DC is not exceeded by more than 10% even in the most unfavorable
circumstances (see EN 60204-1).
The use of external mains chokes and mains filters is required. Excessively high
external fusing will endanger cables and devices. The fusing of the AC supply
input and 24V supply must be installed by the user, best values are given on p.22.
Hints for use of Residual-current circuit breakers (FI) ð p.31.
Correct wiring is the basis for reliable functioning of the servo system.
Route power and control cables separately. We recommend a distance of at least
200mm. This improves the interference immunity. If a motor power cable is used
that includes cores for brake control, the brake control cores must be separately
shielded. Ground the shielding at both ends. Ground all shielding with large areas
(low impedance), with metalized connector housings or shield connection clamps
wherever possible. Notes on connection techniques can be found on page 40.
Feedback lines may not be extended, since thereby the shielding would be
interrupted and the signal processing could be disturbed. Lines between amplifiers
and external brake resistor must be shielded. Install all power cables with an
adequate cross-section, as per EN 60204 (ð p.23) and use the requested cable
material (ð p. 41) to reach max. cable length.
The servo amplifier's status must be monitored by the PLC to acknowledge critical
situations. Wire the BTB/RTO contact in series into the emergency stop circuit of
the installation. The emergency stop circuit must operate the supply contactor.
It is permissible to use the setup software to alter the settings of the servo
amplifier. Any other alterations will invalidate the warranty.
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SERVOSTAR 640/670 Instructions Manual
12/2010
Electrical Installation
37