Accusetter Manual - BC MacDonald & Co.

4.5 Input/Output Board
Accusetter I/O Board (P/N 5911013) Functions
The Accusetter I/O board provide the user with various I/O functions. All I/O functions
are optically isolated from the rest of the Accusetter electronics and are available at the
rear panel I/O A and B connectors.
Summary of I/O signals
Inputs
• Air Shutoff Present: Control line to detect connection of automatic air shutoff
assembly #5913250.
• Footswitch: Control line to externally send data via the RS232C port.
• TIR/PEAK Reset: Control line to externally reset TIR or PEAK detectors.
• Status/Class Request: Control line to select output of over, good, under relay or
class bit 0, 1, or 2. See Outputs below.
Inputs are activated by applying a 5-24 VDC signal to the appropriate input line. These
signals must be positive in respect to the Isolated Common P24. See “Typical
Connections” section for examples.
Outputs
• Air Off: Shuts off air flow to tooling using automatic air shutoff assembly
#5913250.
• Over Relay/Class Bit 0: Normally open Over relay or classification bit 0
• Good Relay/Class Bit 1: Normally open Good relay or classification bit 1
• Under Relay/Class Bit 2: Normally open Under relay or classification bit2
• Class Bit 3: Classification bit 3
• Class Bit 4: Classification bit 4
Outputs are normally open Solid State Relays (SSR) and can sink or source current up to
250ma (AC, DC). Maximum load voltage is 120V. Typical “on resistance” (Ron) is 5
ohms. All outputs are referenced to the Relay Output Common P19. See “Typical
Connections” section for examples.
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