Key your i/o chassis – Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE User Manual
Page 26

Install the QDC Module
Chapter 2
2-5
Important: Selecting –10 to +10V dc with jumper E11, E12, E15, and/or
E16 sets the QDC module for bi-directional valve operation. The
relationship to percentage output is as follows:
% Output Requested
Output V
oltage
-10
-8
-5
-3
0
3
5
8
10
0
10 20 30 40 50 60 70 80 90 100
Use the plastic keying bands, shipped with each I/O chassis, for keying I/O
slots to accept only one type of module. This is done to prevent the
inadvertent installation of the wrong module into the wrong slot.
The QDC module is slotted in two places on the rear edge of the circuit
board. The position of the keying bands on the backplane connector must
correspond to these slots to allow insertion of the module.
Place keying bands between the following terminal numbers labeled on the
backplane connector of your I/O chassis (see Figure 2.2):
between 20 and 22
between 26 and 28
Figure 2.2
Keying Positions
2
4
6
8
1 0
1 2
1 4
1 6
1 8
2 0
2 2
2 4
2 6
2 8
3 0
3 2
3 4
3 6
12676
Keying
Bands
1771ĆQDC
Key Your I/O Chassis