Allen-Bradley 1391B Series, Instruction Manual

Page: 30 / 82

Inputs, Outputs and Adjustments
Chapter 5
5-28
Torque Command Input (TB2, Terminals 15, 16)
Terminals 15 and 16 provide a small amount of input filtering for operating
the controller in a torque block or velocity feedforward mode. A
±
3V DC
command equals 100% of the S1 current setting (i.e. motor rated current).
The buffered output of the command at terminal 4 of TB2 can be
connected to terminal 16 if more filtering is desired.
Spares (TB2, Terminals 18-20)
Reserved for future use and are not to be used.
Terminal Block - TB3 (A Quad B Board)
Figure 5.1 provides interconnect information between the position
controller and TB3 on the A Quad B Board.
ATTENTION: To guard against possible damage to the A
Quad B Board, assure that wiring between TB3 and the position
controller is correct. Refer to Figure 5.1.
!
Figure 5.1
A Quad B Board Wiring
Important: Note terminal orientation prior to wiring.
1 TB2 20
10 TB3 1
1
Recommended Wire – Belden #9728 or equivalent. Maximum distance between the A Quad B
Board and the position controller is 40 feet (12.2 meters) using a 5 volt signal. For distances up
to 300 feet (91 meters), 18 AWG (0.8 mm
2
) wire and an 8 to 15V DC power supply must be used.
2
For proper operation when interconnecting to IMC products, the B and B (NOT) signals must be
reversed.
When interfacing to IMC 121 or 123 controllers, use the 1391-CAQB cable.
TB3
Num-
ber
1
2
3
4
5
6
7
8
9
10
Description
A
A (NOT)
B
2
B (NOT)
2
Z
Z (NOT)
+5V DC (
±
5%)
Signal Common
+8 to +15V DC
In
No Connection
A Quad B Board
To Position
Controller
1
Power
Supply
Input
1
9 8 7 6 5 4 3 2 1
2 1 S3
Top Logic Control Board
The A Quad B option operates in the same manner as the Allen-Bradley
845H Line Driver Encoder (26LS31 line driver output). The option
requires either a reg5V DC at terminal 7 or an unreg8 to
+15V DC input at terminal 9 (board draws 125mA maximum). The pulse
train output is selectable to 256, 512, 1024 or 2048 lines per revolution via
the Encoder Output switch, S3 (see page 5-36).