VC3500/VC3700 Troubleshooting Manual
Valco Cincinnati
Page 18
Jumpers
JP1
Common/Independent Output Control
Pins 1 & 2 jumpered: For the first Valve Driver board (Channels 1 & 2),
this causes both outputs to be controlled
from
Channel 1 program parameters. For the
second
Valve Driver board (Channels 3 & 4,
VC3500
only), this causes both outputs
to be controlled
from Channel 3
program parameters.
Pins 2 & 3 jumpered: Allows outputs to be controlled independently.
JP2
Fixed/Variable Peak Voltage duration for Channel 1
Pins 1 & 2 jumpered: Forces a fixed Peak Voltage duration of 3.5mS for
Channel
1.
Pins 2 & 3 jumpered: Allow adjustment of Peak Voltage duration of
1mS
to 10mS for Channel 1 using potentiometer P1.
JP3
Fixed/Variable Peak Voltage duration for Channel 2
Pins 1 & 2 jumpered: Forces a fixed Peak Voltage duration of 3.5mS for
Channel
2.
Pins 2 & 3 jumpered: Allow adjustment of Peak Voltage duration of
1mS
to 10mS for Channel 2 using potentiometer P2.
JP4
Fixed/Variable Hold Voltage level
Pins 1 & 2 jumpered: Forces a fixed Hold Voltage level of 12v.
Pins 2 & 3 jumpered: Allows adjustment of Hold Voltage level of 5v to
12v
using
potentiometer
P3.
Potentiometers
P1 (PTIME1)
Provides adjustment between 1mS and 12mS for Channel 1 Peak
Voltage duration when JP2 has a jumper between pins 2 & 3. Clockwise
rotation increases duration.
P2 (PTIME2)
Provides adjustment between 1mS and 12mS for Channel 2 Peak
Voltage duration when JP3 has a jumper between pins 2 & 3. Clockwise
rotation increases duration.
P3 (HOLDV)
Provides adjustment between 2v and 13v for Hold Voltage level when
JP4 has a jumper between pins 2 & 3. Clockwise rotation increases hold
voltage level.
Schematic Description
Ground Reference
The ground reference used on this board is isolated from other grounds used in the system.
Opto-isolators on the Interface board provide this isolation.
56v Peak Supply
Transformer XF1 supplies 36vac to connector J2, Pins 1 & 2. Bridge rectifier BR2 provides
an unregulated 56v for the valve Peak Voltage. A sample of this voltage exits this board via
J1, pin 10, to drive the 56vdc coil voltage LED indicator on the front panel.
Summary of Contents for VC3500
Page 1: ...VC3500 User s Manual Software Version 3 X Manual Number MCO35 Manual Release Date July 1999 ...
Page 19: ...Installation VC3500 User s Manual Valco Cincinnati 16 Figure 8 Internal Connections Diagram ...
Page 88: ...VC3700 User s Manual Software Version 3 X Manual Number MCO34 Manual Release Date July 1999 ...
Page 181: ...VC3500 VC3700 Troubleshooting Manual Manual Number MC048 Release Date May 1999 ...
Page 185: ...VC3500 VC3700 Troubleshooting Manual Valco Cincinnati Page 1 System Level Documents ...