Hioki SW9001, Инструкция по эксплуатации

Страница: 30 / 170

26
Inspection before Measurement
Checking for relay contact welding
If a relay contact welds, the battery of the measuring object may short or the channels may be
connected in parallel, resulting in improper measurement.
You can check that the relays are not welded according to the following procedure.
1
Short all the module terminals.
2
Send inspection command : TEST:RELAYSHORT <
No. of slot to be inspected
>,CH , and set the
test state of the channel relay.
Example: Inspect the channel relay of SLOT 1 .
:TEST:RELAYSHORT 1,CH
3
Check that the terminals of the shorted modules and the following points of the terminals on
the main frame are not electrically connected.
Continuity inspection points
TERMINAL 1 , H
TERMINAL 1 , L
TERMINAL 2
, SENSE H
TERMINAL 2 , SENSE L
TERMINAL 2 , SOURCE H
TERMINAL 2 , SOURCE L
TERMINAL 3
, SOURCE H shield
TERMINAL 3 , SOURCE L shield
1
17
18
33
34
50
Tester
Check that the terminal of the shorted
module and the above points of the
terminal on the main frame are not
electrically connected.
The connector is for the SW9001.
4
Send inspection command
: TEST:RELAYSHORT <
No. of slot to be inspected
>,BUS
, and set the
test state of the bus relay, then confirm step
3
.
5
Send inspection command
: TEST:RELAYSHORT <
No. of slot to be inspected
>,OPEN
, and end the
inspection for this slot.
6
Perform steps
1
to
5
for all the slots.
Module relay contact may be weld if it was conducted during inspection. Stop the use and contact
your authorized Hioki distributor or reseller.
HIOKI SW1001A961-04