Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS - Manual (Page 40)

Hardware Description
Chapter 5
5Ć3
Outputs to Servo Drive
Terminals 3 and 4 on the right wiring arm provide connection points for
the velocity command signal to the serve drive. This analog output is a
+10V dc differential signal.
Terminals 8, 9, and 10 on the right wiring arm provide connection points
for a drive disable signal (Figure 5.2). In chapter 6 we will show you how
to connect this output to either source or sink 100mA maximum to enable
the drive. The module normally provides current thru this transistor to
enable the drive. However, the module will turn off the current to disable
the drive if:
the hardware stop input goes high
a command block commands an immediate stop
a firm ware or hardware watchdog timers times out
the 1771-ES expander detects excess following error, a loss of
feedback, or a power supply loss
Figure 5.2
Schematic Diagram of the DriveĆdisable Output Circuit
8
9
10
8
9
10
DRIVE
DISABLE
SUPPLY
DRIVE
DISABLE
OUTPUT
DRIVE
DISABLE
COMMON
1771-ES Expander
Q1
8.2k
12011
Ω
The 1772-ES expander is compatible with a wide variety of servo drives,
including Allen-Bradley Bulletin dc Servo Controllers (refer to
publication 1388 -5.0). Allen Bradley also offers Bulletin 1326 dc servo
Motors to match the Bulletin 1388 dc Servo Controllers.