12
Wiring
Gladiator Conductivity Switch Series
Test Terminal Function Selection
Terminal Block
PLC / SCADA / DCS Output
Test
Terminal Block
Test
Test
Coil rating
500mW max
or 50mA max
Test
To switch an external relay
+12-24Vdc
PLC
SCADA
DCS Input
Pull up
12-24Vdc
max 50mA
To a PLC input
Externally provided
test button
PLC/SCADA/DCS GROUND MUST
CONNECT BACK TO GLADIATOR
GROUND OR DC ‘-’ TERMINALS
EXTERNAL PUSH BUTTON GROUND
MUST CONNECT BACK TO GLADIATOR
GROUND OR DC ‘-’ TERMINALS
Test terminal will provide an output which is able to switch an external failsafe relay or PLC/SCADA/DCS
input. During normal system operation this terminal will internally switch a solid state (transistor) output to
ground (or DC ‘-’). If power fails or an internal system failure occurs, the terminal will act as an open circuit.
Relay will turn on during
normal system operation
or off in failed or unpowered
conditions.
Input will detect ‘0’ state during normal system
operation, or ‘1’ in failed or unpowered conditions.
Test input mode
Test switch must be in ‘TEST’ (ON) position on Smart Probe - function always enabled on Remote Amplifier.
Test terminal acts as an input for remote testing of the instrument’s switching function. Used to check for
malfunction of unit from a remote position, PLC, SCADA etc. For more information see page 17.
TEST INPUT FROM PLC/SCADA/DCS DIGITAL OUTPUT
OPERATOR CONTROLLED PRESS TO TEST
FAILSAFE OUTPUT MODE (Test switch must be in the ‘OFF’ position - default setting)
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