Rockwell Automation 1746-QV QUICK START OPEN-LOOP VELOCITY - Manual (Page 2)

Open-loop Velocity Control Module 2
Publication 1746Ć10.1 - may 1997
4. Connect Module Output Terminals to Output Devices Chapter 4
1746ĆQV Output
Terminal Block
Analog Output
("10v dc)
Diff.
Input
Outputs
to valves
Servo Amplifier
(Proportional)
(+)
(-) To solenoid A
To solenoid B
A
B
+24V dc PS
0V dc PS
2
1
0V
Important: Connect the shield of the amplifier
output cable to a 0V connection in the amplifier.
Do not connect the shieled to earth ground.
5. Minimize Interference from Electrical Noise with Correct Shielding and Grounding Chapter 4
Important: Connect the following to earth ground: a) cable shields (except for amplifier output cable) at
one end only, b) input terminal 4, c) case grounds of PS and amplifier, e) LDT flange.
1746ĆQV
Module
LDT and Hydraulic Ram
Analog Output
Valves
Servo
Proportional
Amplifier
LDT
Signals
24V PS "15V PS
4
earth ground
2
(-) (+) (+) (C) (-)
Output
Input
Belden
8761
Belden
8761
Case
GND
Case
GND
Cable
Note
Cable
Note
Cable Note: Use cable
recommended by the LDT
and amplifier manufacturer.
Belden
8770
3
1
5Ć8
LDT
Power
PistonĆtype Hydraulic Cylinder and
Linear Displacement Transducer (LDT)
0V
Case
GND
2
1
Important: For correct bonding,
connect PS output commons together
and isolate from earth ground.
6. Operate the Module for the First time Chapter 5
After loading extend and retract profiles (step 1), alternately run the extend profile (O:e.0/0 = 0ĆtoĆ1), then
the retract profile (O:e.0/1 = 0ĆtoĆ1). Modify a profile to reach the preset reference, and set it.
Important: If motion is reversed: for a "10V dc output, change the sign (") of all extend/retract voltage
values; or for a +10V output, energize the other solenoid on the directional valve (with ladder logic).
To do this: Enter decimal: at address:
load all profiles 1 N7:40
set preset reference to zero 8 N7:50
clear errors 16 N7:50
read current position read, only N7:61
AllenĆBradley, a Rockwell Automation Business, has been helping its customers improve
productivity and quality for more than 90 years. We design, manufacture and support a broad
range of automation products worldwide. They include logic processors, power and motion
control devices, operator interfaces, sensors and a variety of software. Rockwell is one of the
world's leading technology companies.
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AllenĆBradley Headquarters, 1201 South Second Street, Milwaukee, WI 53204 USA, Tel: (1) 414 382Ć2000 Fax: (1) 414 382Ć4444
Publication 1746Ć10.1 - may 1997
Supercedes 1746Ć10.1 - August 1996
PN955129Ć42
Copyright 1997 AllenĆBradley Company, Inc. Printed in USA