Associated Research HypotULTRA 7800, Operation And Service Manual

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132
The Remote Signal Input
connector may be used with
various accessories,
including light curtains, foot
switches, and safety probes.
Contact Associated
Research, Inc. for more
information.
DID YOU KNOW?
indicates what conditions activate each pin. When a terminal becomes active the
relay closes thereby allowing the external voltage to operate an external device.
Pins 1 and 2 provide the PASS signal.
Pins 3 and 4 provide the FAIL signal.
Pins 5 and 6 provide the PROCESSING signal.
Pins 7 and 8 provide the RESET signal.
The following describes how the relays operate for each test condition:
PROCESSING
– The relay contact closes the connection between pin (5) and pin (6)
while the instrument is performing a test. The connection is opened at the end of the
test.
PASS
– The relay contact closes the connection between pin (1) and pin (2) after
detecting that the item under test passed all tests. The connection is opened when
you initiate the next test or active the reset function.
FAIL
– The relay contact closes the connection between pin (3) and pin (4) after
detecting that the item under test failed. The connection is opened when you initiate
the next test or active the reset function.
RESET OUT
– The relay contact closes the connection between pin (7) and pin (8)
while the reset function is activated. This is only a continuous closure dependent on
the length of time you hold the reset button in an active state.
7.2 Remote Signal Inputs and Memory Access
The HypotULTRA remote connector enables remote operation of the TEST, RESET,
and REMOTE INTERLOCK functions, and allows you to select one of 10 pre-
programmed test files.
When the PLC Remote mode is on, the HypotULTRA will respond to simple switch or
relay contacts closures. You can wire a normally open momentary switch across pins
3 and 5 to allow remote operation of the TEST
function. A minimum pulse width or contact
closure of 20mS is required to guarantee a test
start. You can wire a normally open momentary
switch across pins 2 and 5 to allow remote
operation of the RESET function. A minimum
pulse width or contact closure of 50mS is
required to guarantee that a running test will
abort. When the PLC remote function is (ON) the
instrument will disable the TEST switch on the
front panel to prevent you from activating a test
through this switch. For safety, the front panel