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1.0 INTRODUCTION
The Walchem Intuition-6™
Series
controllers offer a high level of flexibility in controlling metal finishing
applications.
One or two sensor inputs are available that are compatible with a variety of sensors:
Single Copper or Nickel plus Single pH
Dual Analog (4-20 mA) Input
Single Analog Input + Single Sensor (Contacting Conductivity, pH, ORP, Disinfection or Generic linear voltage
between -2 and 2 VDC)
Sensor Input (Electrodeless Conductivity, Contacting Conductivity, pH, ORP, Disinfection or Generic linear
voltage between -2 and 2 VDC)
An analog (4-20 mA) sensor input card with two input circuits is also available for use with 2,3 or 4-wire transmitters.
Or a sensor card that combines one sensor (contacting conductivity, pH, ORP, disinfection or generic) plus one analog
(4-20 mA) input is available.
Six Virtual Inputs are configurable in the software, to either allow for calculations based on two real inputs, or to
allow to compare values from two sensors to provide redundancy.
Six relay outputs may be set to a variety of control modes:
Plating Control
Plating Follow
Flow Timer
On/Off set point control
Time Proportional control
Pulse Proportional control (when purchased with Pulse solid state opto outputs)
PID control (when purchased with Pulse solid state opto outputs)
Lead/Lag control of up to 6 relays
Dual set point
Timer
Feed as a percent of elapsed time
Always on unless interlocked
Probe Wash timer
Spike to alternate set point on timed basis
Flow Meter Ratio
Counter Timer
Dual Switch
Diagnostic Alarm triggered by:
High or Low sensor reading
No
Flow
Relay output timeout
Sensor
error
Relays are available in several combinations of powered relays, dry contact relays, and pulse solid state opto relays.
Six virtual Control Outputs are configurable in the software, using most of the possible relay or analog output control
algorithms, that may be used to interlock or activate actual control outputs.
An option card with two isolated analog outputs may be installed to retransmit sensor input signals to a chart recorder,
datalogger, PLC or another device. They may also be connected to valves, actuators or metering pumps for linear propor-
tional control,
flow proportional
or PID control.
