PowerFlex 755 Install Manual.pdf

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Step 4 I/O Wiring
Important points to remember about I/O wiring:
Always use copper wire.
Wire with an insulation rating of 600V or greater is recommended.
Control and signal wires should be separated from power wires by at
least 0.3 meters (1 foot).
In order to maintain electrical safety for all user-accessible low voltage
circuits (ELV and PELV circuits), I/O terminals designated for 24V or
lower voltage must not be connected to a circuit of higher voltage or a
circuit which is not adequately insulated from dangerous voltages with
double or reinforced insulation within other connected equipment or
wiring.
In order to provide electrical safety for user-accessible low voltage I/O
circuits which are referenced to earth (PELV circuits) and which may be
touched simultaneously, care should be taken to provide a common earth
reference for all equipment connected to the drive.
Important: I/O terminals labeled “(–)” or “Common” are not referenced to
earth ground and are designed to greatly reduce common mode
interference. Grounding these terminals can cause signal noise.
!
ATTENTION: Hazard of personal injury or equipment damage
exists when using bipolar input sources. Noise and drift in
sensitive input circuits can cause unpredictable changes in motor
speed and direction. Use speed command parameters to help
reduce input source sensitivity.
I/O Terminal Blocks
Table 22 I/O Terminal Block Specifications
Wire Size Range Torque Strip
Name
Maximum Minimum Maximum Recommended Length
753 Control Module TB2 2.5 mm2 0.3 mm
(14 AWG)
2 0.25 N m 0.2 N m 6 mm
(28 AWG) (2.2 lb in) (1.8 lb in) (0.24 in.)
753 Control Module TB1 and 2.5 mm
TB3
2
0.3 mm
(14 AWG)
2
0.25 N m 0.2 N m 6 mm
(28 AWG) (2.2 lb in) (1.8 lb in) (0.24 in.)
755 Control Module TB1 2.5 mm2 0.3 mm
(14 AWG)
2
0.25 N m 0.2 N m 6 mm
(28 AWG) (2.2 lb in) (1.8 lb in) (0.24 in.)
755 I/O Module TB1 2.5 mm2 0.3 mm
(14 AWG)
2 0.25 N m 0.2 N m 6 mm
(28 AWG) (2.2 lb in) (1.8 lb in) (0.24 in.)
755 I/O Module TB2 4.0 mm2 0.25 mm
(12 AWG)
2
0.5 N m 0.4 N m 7 mm
(24 AWG) (4.4 lb in) (3.5 lb in) (0.28 in.)
Safe Torque Off 0.8 mm2 0.3 mm
(18 AWG)
2
N/A 10 mm
(28 AWG)
(0.39 in.)
Single Incremental Encoder 0.8 mm2 0.3 mm
(18 AWG)
2 N/A 10 mm
(28 AWG)
(0.39 in.)
Safe Speed Monitor TB1 and 2.5 mm
TB2
2 0.25 mm
(14 AWG)
2 0.25 N m 0.2 N m 6 mm
(24 AWG) (2.2 lb in) (1.8 lb in) (0.24 in.)
Dual Incremental Encoder 0.8 mm2 0.3 mm
(18 AWG)
2
N/A 10 mm
(28 AWG)
(0.39 in.)
Universal Feedback Module 0.8 mm2 0.3 mm
(18 AWG)
2
N/A 10 mm
(28 AWG)
(0.39 in.)
Auxiliary Power Supply TB1 2.5 mm2 0.3 mm
(14 AWG)
2 0.25 N m 0.2 N m 6 mm
(28 AWG) (2.2 lb in) (1.8 lb in) (0.24 in.)
PowerFlex 750-Series Installation Instructions – Publication 750-IN001C-EN-P – September 2009