Vaisala DMP248 Service Manual Page 140

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APPENDIX 7 ________________________________________________________________________
134 ____________________________________________________________________ U263EN-1.4
side of the module if the mains power is in use. Attach the ribbon
cable from X3 of the alarm unit to the X16 on the main board of the
transmitter.
NOTE
NO jumper in connector X4 during normal operation.
When one alarm unit relay is on, the corresponding LED is lit.
-+
-+-+
signal cable gland
X3
X16
ribbon cable
M3 screws (4 pcs) for mounting
(prefix with fibre washers)
M4 screw and washer for
protective ground terminal
replace the plastic plug with cable
gland for ¢7...12 mm cable
cable: strip wires only 5 mm; use
crimped terminal for ground wire
if stranded wire is used
probe cable gland
arrange signal cable wires so
that they do not reach bare AC
wires when the cover is closed
Prefix the fastening screws with fiber washers for mounting the unit to
the box.
NOTE
The alarm unit cannot be used with the power supply unit
HMP230PW.
WARNING
Do not detach the alarm unit from the transmitter when the power is
on.
WARNING
Do not connect the mains power to alarm unit without grounding the
transmitter.
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