Electrical Connections - Key Automation 900CT-24M Manual De Instrucciones

WARNING:
It is advisable to read the instructions carefully before you start installation.
Failure to comply with these instructions, improper use or incorrect connection may compromise
the safety or correct operation of the device and hence of the entire system.
No liability shall be accepted for any malfunctions and/or damage due to failure to comply with the
instructions.
The company reserves the right to make improvements to the products.
THIS BOOKLET IS TO BE USED ONLY BY THE INSTALLER
Installation must be carried out only by professionally qualified personnel in compliance with cur-
rent legal requirements.

ELECTRICAL CONNECTIONS

With existing installations, a general check of the state of the wires (section, insulation, contacts)
and auxi-liary equipment (photocells, receivers, pushbutton boards, key selectors, etc.) is recom-
mended.
Tips for correct installation:
1. The cross section of the cables should be calculated according to their length and absorbed
current.
2. Do not use a single cable of the "multi-core" incommon with other equipment.
3. When the control cables are very long (over 50 metres), de-coupling is advisable with relays
mountednear the control unit.
4. Any N.C. inputs (photocells, limit switches, safety edge and stops) that are not used in thecontrol
unit should be short-circuited with the common terminal terminal.
5. All the N.C. contacts linked with the same input should be connected in series.
6. All the N.O. contacts linked with the same input should be connected in parallel.
- THE INSERTION OF AN external, independent DISCONNECTING SWITCH (not supplied) 30mA
of suita-ble capacity for the load is envisaged for the control unit power supply.
- The equipment should be INSTALLED in a "WORKMANLIKE" manner by qualified personnel
inaccordance with the laws in force and in compliance with standards EN 13241-1, EN 12453 and
EN 12445 regar-ding automation safety.
IMPORTANT: THE UNLOCK/LOCK PROCEDURES MUST BE PERFORMED
WITH POWERED OFF MOTOR
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