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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
the next test is initiated or the reset function is activated.
FAIL
– The relay contact closes the connection between pin (3) and pin (4) after
detecting that the item under test failed. The connection will open when the next test
is initiated or the reset function activated.
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 the reset button is held in an active state.
START OUT - The relay contact closes the connection between pin (7) and pin (9).
The Hipot Start parameter directly controls the Start output relay. G
W will
momentarily close the start output relay at the end of the Ground Bond test and G +
W will momentarily close the start output relay at the start of the Ground Bond test.
The Hipot Start parameters main purpose is to control the sequential timing between
Ground Bond Tester and a connected eec Hipot. The parameter controls if the Hipot
will run after the Ground Bond Tester has completed its test, G
W, or if the Hipot will
run at the same time as the Ground Bond Tester, G + W.
6.2 Remote Signal Inputs and Memory Access
The Ground Bond remote connector enables remote operation of the TEST, RESET,
and REMOTE INTERLOCK functions, and allows the operator to select Memory
Location 1, 2, and 3.
When the PLC Remote mode is on, the Ground Bond will respond to simple switch or
relay contacts closures. A normally open momentary switch can be wired 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. A normally open
momentary switch can be wired 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
TEST switch on the front panel will be disabled to prevent a test from being activated
through this switch. For safety, the front panel RESET switch remains active even
when a remote reset switch is connected so that high voltage can be shut down from
either location.
The Remote File Select function gives the user the capability to quickly change
parameters and initiate a test remotely. Three internal memory programs can be
accessed by connecting terminals 7, 8, and 9 in different combinations. The memory
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