Graco HydroShield WABH00 Instructions - Parts Manual page 20

Installation
4. Connect the 24 VDC signal to A1+ and GND to
A2– of the electrostatic input optocoupler.
LPO: Low Paint Output
EI: Electrostatic Input
DSI: Digital Stop Input
Figure 12 Terminal Block Wiring
Only one A2– port needs to be connected to
GND, as the two ports labeled A2– are connected
internally.
5. Apply 24 VDC to A1+ to activate the input.
20
Connect the Connect Connect the Electrostatic the Electrostatic Enable Electrostatic
When the electrostatic request input is active and
the system is in Spray mode, the electrostatic enable
output will be active. This will signal the spray gun
to turn on electrostatics. Connect this signal to the
device that normally turns on the gun's electrostatics.
There are pneumatic and electrical options for this
output.
Pneumatic Output Pneumatic Pneumatic Output Output
1. Connect a 5/32" air line to the
electrostatic enable output (EEO) port
on the right side of the cabinet. See
Connect the Paint Trigger Input, page 19
2. Run this line to the input of the device that
activates electrostatics.
Note
Plug this port if it is not being used.
It will be pressurized every time the
electrostatic enable output (EEO) port
is active even when using the electrical
output.
Electrical Output Output
Electrical Electrical Output
1. Prepare the electrical controls for service. Follow
the steps in Prepare the Electrical Controls for
Service, page 106.
2. Run two wires through the I/O port strain relief on
the right side of the system. See
3. Feed these wires through the top right opening
in the electronics control panel.
4. Connect terminal block 7 to the gun's electrostatic
controller. When the output is inactive terminal
block 7 has 4-5 volts present. When the
output is active there is 24V present. See
Terminal Block Wiring.
5. Connect terminal block 8 to GND.
Note
When used with Graco electrostatic
controllers, terminal block 7 signal
voltage is optically isolated at the
controller. If using any other controller be
sure to use an optocoupler at the input to
the device.
To prevent damage to equipment, do not use
these terminal blocks without an optocoupler
present.
Enable Output Enable Output Output
figure.
I/O Ports.
NOTICE NOTICE NOTICE
3A8492A