Encoder Installation - Baldor VS1GV21-1B Installation & Operating Manual

4.13 Encoder Installation

The Encoder Board (Daughter FDBK) is installed in the Feedback Module Slot 3 shown in Figure 4-11. Encoder
connections are made at that board. Use 16AWG (1.31mm2) maximum. The Encoder Board can provide +5VDC or
+12VDC (jumper selectable) encoder power. The factory setting for this jumper is +5VDC power. If an external
power supply is used for encoder power, the J1 jumper must still be used to scale the input signal levels correctly.
J1 selects the power source for the encoder
Encoder
Connector
A
Channel A+
H
Channel A -
B
Channel B+
J
Channel B-
C
Channel C+
K
Channel C-
D
Encoder Power +
F
Encoder Power -
Important: An isolated power supply provides encoder power. Do not connect encoder Power to encoder case. Encoder
performance will be compromised.
Single Ended Connections
Differential inputs are recommended for best noise immunity. If only single ended encoder signals are available, connect
them to A+, B+, and INDEX (C+) (2, 4, and 6 respectively). A-, B- and C- are then connected to common at 9 as shown in
Figure 4-12.
Encoder
Connector
A
Channel A+
H
B
Channel B+
J
C
Channel C+
K
D
Encoder Power+
F
Encoder Power-
*If these wires are present in cable, they need to be
connected to terminal 9.
Important: An isolated power supply provides encoder power. Do not connect encoder Power to encoder case. Encoder
performance will be compromised.
MN765
Figure 4-11 Differential Encoder Connections
16-22AWG Twisted Pair
Grey
Violet
Yellow
Orange
Blue
Green
White
Black
Shield
Channel A+
Channel A-
Channel B+
Channel B-
Channel C+
Channel C-
Figure 4-12 Single Ended Encoder Connections
J1 selects the power source for the encoder
16-22AWG Twisted Pair
Grey
Violet*
Yellow
Orange*
Blue
Green*
White
Black
Shield
Channel A+
Channel A-
Channel B+
Channel B-
Channel C+
Channel C-
J1 Pins Power Source
1-2 5VDC
2-3 12VDC
Encoder
Board
J1
Chassis
1
GND
16
1
16-22AWG Twisted Pair
J1 Pins Power Source
1-2 5VDC
2-3 12VDC
Encoder
Board
J1
Chassis
1
GND
16
1
16-22AWG Twisted Pair
Encoder Board Connections
Pin Signal (In) Pin Signal (Out)
1 Chassis GND 10 CH A+
2 A+ 11 CH A-
3 A- 12 CH B+
4 B+ 13 CH B-
5 B- 14 CH C+
6 C + 15 CH C-
7 C - 16 Chassis Ground
8 Encoder Power +
Isolated Power
9 Encoder Power -
Supply Output
16 = Outer Shield
Connect all cable shields to pin 1 or 16.
For single ended encoder connections, connect
all unused inputs to pin 9. Pin 9 is an isolated
ground, do not connect to any other ground.
See recommended tightening torques in Table A-2.
Encoder Board Connections
Pin Signal (In) Pin Signal (Out)
1 Chassis GND 10 CH A+
2 A+ 11 CH A-
3 A- 12 CH B+
4 B+ 13 CH B-
5 B- 14 CH C+
6 C + 15 CH C-
7 C - 16 Chassis Ground
8 Encoder Power +
Isolated Power
9 Encoder Power -
Supply Output
16 = Outer Shield
Connect all cable shields to pin 1 or 16.
For single ended encoder connections, connect
all unused inputs to pin 9. Pin 9 is an isolated
ground, do not connect to any other ground.
See recommended tightening torques in Table A-2.
Power Wiring 4-13