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Electrical installation
8.2
Guide to electrical installation
NOTICE
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 58.
Feedback lines may not be extended, since thereby the shielding would be interrupted
NOTICE
and the signal processing could be disturbed. Lines between amplifiers and external
brake resistor must be shielded. Install all cables with an adequate cross-section, as per
IEC 60204 (ð p.29) and use the requested cable material (ð p. 59) to reach max. cable
length.
The following notes should help you to carry out the electrical installation.
Cable selection Select cables in accordance with IEC 60204 ð p.29.
56
For EMC-compliant shielding and grounding ð p.63.
Grounding
Ground the mounting plate, motor housing and CNC-GND of the
Shielding
control system. Notes on shield connection techniques ð p.58.
NOTE: Route power leads and control cables separately.
Wiring
Wire the BTB/RTO contact in series into the emergency off
circuit of the system.
1. Connect the digital control inputs and outputs.
2. Connect the analog input source, if required.
3. Connect the feedback device.
4. Connect the expansion card
—
(see corresponding notes from page 123).
5. Connect the motor cable
—
Connect shielding at both ends.
6. Connect motor-holding brake, connect shielding at both ends.
7. Connect external brake resistor (with fusing)
8. Connect the auxiliary supply
(maximum permissible voltage values ð p.28).
—
9. Connect the main electrical supply
(maximum permissible voltage values ð p.28), hints for use of
—
Residual-current circuit breakers (FI) ð p.48
10.Connect the PC (ð p.100).
Final check of the implementation of the wiring against the wiring
Final check
diagrams that have been used.
11/2018
S748-S772 Instructions Manual
Kollmorgen
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