DS600 Non-Ferrous Double Sheet Detector
This document is confidential and proprietary. No part of this document may be disclosed in any manner
to a third party without the prior written consent of Prime Controls, Inc.
202177 7 Revision M
2.4 Input Logic Signals
The logic inputs to the DS600 family of controllers include the four signals for selecting the
calibration memory (SEL0-3 and ENABLE), an external calibration input (CAL) and an output
latch RESET signal. All inputs are electrically isolated from the controller circuitry but may
optionally be made to share common or power supply voltage with the controller.
All logic inputs may be configured to receive signals from sourcing or sinking drivers. To receive
sourcing signals, connect the reference signals (IN REF and SEL REF) to common. To receive
sinking signals, connect the reference signals to the +24V power supply voltage.
CAL
The CAL terminal provides a means of initiating calibration of the DS600 without having to
access the front panel pushbutton. When a pulse is applied to the CAL terminal, high for
sourcing, low for sinking, the calibration process is initiated. To be detected by the controller,
the pulse must be ON for a minimum of 25 milliseconds. See Calibration section (page 11) for
modes of calibration.
RESET
The RESET signal controls the latch feature on the REJECT output signal. If RESET is applied,
high for sourcing, low for sinking, the REJECT output simply follows the state of the gauge
signal. If RESET is not applied and the gauge signal moves into the reject range, the RESET
signal switches to the OFF state and remains there indefinitely until the gauge signal moves out
of the reject range and RESET is applied.
This feature allows fast REJECT signals to be captured and held until acknowledged by either a
return signal from a controller or a manual reset by an operator.
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