6
Installation
NOTE!
Correct installation of the ground lead is essential for fulfilling
the EMC requirements and for proper operation of the module.
7. Non-English speaking locations: Add a warning sticker in the
appropriate language over the existing warning on the top of the
module.
Wiring – General
The pulse encoder should be connected to the OTAC-01 module with
cables as specified below.
Terminal Designations
Use the following table for reference when wiring terminals.
Cable construction
4 × (2+1) Twisted pair cable with individual
and overall shields.
Conductor cross-sectional area
0.5 to 1.5 mm
2
20 to 16 AWG
Identification
Description
OTAC
Encoder
A
1
A
A+
• Max. signal frequency: 200 kHz
• Signal levels:
Logic “1”: 7.5 to 26 V
Logic “0”: < 0.8 V
• Input channels isolated from the logic, and ground
• When the drive runs in the
Forward
direction,
channel A should lead channel B by 90° (electrical)
• Channel Z: One pulse per revolution (used in positioning
applications only)
A
1
A
A-
B
2
B
B+
B
2
B
B-
Z
3
Z
Z+
Z
3
Z
Z-
(PWR) V
cc
/ PWR
OTAC-01 does not provide a power supply. These
terminals are used for daisy chaining between the power
supply and the encoder.
(GND)
0 V / GND
SCR
SCR / Shield Used for grounding of the encoder cable shields.
Connected internally to the drive frame.
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