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Discrete I/O
Discrete I/O
The controller can accept up to 19 I/O interface
signals. Systems can be designed to integrate from 1
signal up to all 19 signals.
Discrete I/O input signals are monitored
only if the Electrostatic Controller has
been placed in the Discrete I/O mode. See
Setup Screen 2 (Remote Interface), page
See
Signals, page 21
for available signals.
Isolation
The discrete I/O interface signals are isolated from
circuit ground. Isolation is required to prevent
disturbance of the measurement of the spraying
current.
NOTE: The isolation is not designed to isolate
hazardous potentials.
I/O Grounding
Pins 8, 12, and 17 are the I/O Ground pins. Connect
a ground from each connecting device to one or more
of these pins. This will match the potential of the
Electrostatic Controller and the connecting device.
Remote Input Operation
In order to accept remote input commands from the
discrete I/O interface, the following conditions must
be met:
• The discrete I/O interface must be selected by
setting Parameter P02 = 1.
Setup Screen 2 (Remote Interface), page
See
• The REMOTE Enable input, on the Discrete I/O
cable, pin 4, must have 24 VDC (logical "1") applied
to it to select REMOTE mode.
20
Connect the desired input signals. During REMOTE
input operation, error confirmation is the only local
input (using the keypad) possible.
NOTE: Values for presets P001 – P003 must be set
up prior to entering REMOTE mode. Preset P000
is the only preset which can be altered using the
44.
Discrete I/O cable signals when the controller has
been placed in REMOTE mode. Presets P004 - P250
are not accessible in REMOTE mode.
Remote Output Operation
Connect the desired signals. Digital output signals
are generated unconditionally. Output signals require
24 VDC on Output External Power (pin 16) on the
discrete I/O Interface cable.
Discrete I/O in CAN Mode
Following is a list of inputs and outputs when
operating in CAN mode.
• Safe-to-Move Output
• Error Output
• Output External Power (24 VDC)
• Actual Spraying Current Output
• Actual Spraying Voltage Output
• Electrostatics Discharged Output
• SAFE POSITION Interlock Input
• 24 VDC Interlock Input
• System Interlock
44.
• Electrostatic Enable Input
3A3657C
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