Rockwell-automation 1746-QV QUICK START OPEN-LOOP VELOCITY Manual de usuario Pagina 2

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Open-loop Velocity Control Module2
Publication
174610.1 - may 1997
4.
Connect Module Output Terminals to Output Devices Chapter 4
1746QV
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.
1746QV
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
58
LDT
Power
Pistontype Hydraulic Cylinder and
Linear Displacement T
ransducer (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 = 0to1), then
the retract profile (O:e.0/1 = 0to1). 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
AllenBradley, 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.
Worldwide representation
AllenBradley
Headquarters, 1201 South Second Street, Milwaukee, WI 53204 USA, T
el: (1) 414 3822000 Fax: (1) 414 3824444
Publication 174610.1 - may 1997
Supercedes
174610.1 - August 1996
PN95512942
Copyright 1997 AllenBradley Company
, Inc. Printed in USA
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