Table of Contents
Advertisement
6
Getting started
6.1
Installation
The control circuits are isolated from the power circuits in the drive by basic insulation
only as specified in IEC60664-1. The installer must therefore ensure that the external
control circuits are insulated from human contact by at least one layer of insulation rated
for use at the AC supply voltage.
WARNING
If the control circuits are to be connected to other circuits classified as Safety Extra Low
Voltage (SELV) (e.g. to a personal computer) an additional isolating barrier must be
included in order to maintain the SELV classification.
Encoder connections
In order to ensure correct operation there are a number of checks which should be carried out:
•
Ensure the encoder is securely mounted to the motor as spurious operation can result due to
the encoder slipping whilst the motor is rotating.
•
Ensure encoder connections to both the encoder and the option module terminals are secure.
Intermittent connections can result in spurious operation or the option module not detecting the
feedback signals.
•
Ensure the shielding recommendations as specified in section 5.2 Wiring, Shield
connections on page 28 are followed to prevent noise being induced in the encoder feedback
signals. Noise induced in the encoder feedback cables can result in spurious operation, and in
extreme cases can result in encoder failure and/or damage to the option modules encoder
input.
Encoder feedback is transmitted from an encoder as low voltage digital signals. Ensure that
electrical noise from the drive or motor does not adversely affect the encoder feedback. Ensure that
the drive and motor are connected in accordance with the instructions given in the appropriate
Power Installation Guide. Also verify that the encoder feedback wiring and shielding
recommendations are followed in section 5.2 Wiring, Shield connections on page 28.
6.2
Setting up a feedback device
6.2.1
P1 position interface
The parameter settings which must be made to utilize each of the compatible feedback device
types with the P1 position interface on the drive are described here. For more information regarding
these parameters refer to section 7 Parameters on page 46.
If the position feedback device connected to the P1 position interface is required to be used for
motor control feedback, then Pr 03.026 on the drive will need to be set to P1 SlotX (where X is the
slot in which the module is installed).
SI-Universal Encoder User Guide
Issue: 2
33
Advertisement
Table of Contents
