Greer Company
Greer Company
Greer Company
Greer Company
Crane Systems
1918 EAST GLENWOOD PLACE, SANTA ANA, CA 92705
Tel: (714) 259 9702 Fax: (714) 259 7626
MicroGuard
424 Operation/Troubleshooting Manual Horizontal Display Hydraulic Cranes
35 of 52
W424103 REV A 02/13/01
PRESSURE CHANNEL FAULT GUIDE
PRESSURE CHANNEL FAULT GUIDE
PRESSURE CHANNEL FAULT GUIDE
PRESSURE CHANNEL FAULT GUIDE
TRANSDUCER RESISTANCE MEASUREMENT
TRANSDUCER RESISTANCE MEASUREMENT
TRANSDUCER RESISTANCE MEASUREMENT
TRANSDUCER RESISTANCE MEASUREMENT
The pressure transducer is a balanced bridge composed
of strain gauges bonded to a flexible diaphragm. The
following resistance tests can be carried out to establish
the viability of the pressure transducer.
Piston Pressure Transducer
Piston Pressure Transducer
Piston Pressure Transducer
Piston Pressure Transducer
1. With the power to the computer off, disconnect the
piston pressure transducer from connector 1 on the
computer.
2. With the DVM set to the Ohms range, measure the
resistance between pins “C” an “D” of connector
MS3474W14-5PZ.
The resistance should be 350
Ω
+/- 10
Ω
3. With the DVM set to the Ohms range, measure the
resistance between pins “B” an “E” of connector
MS3474W14-5PZ.
The resistance should be 350
Ω
±
10
Ω
4. With the DVM set to the Ohms range, measure the
resistance between pins B, C, D, E, and the case of
the transducer. Measure the resistance between B,
C, D, E and the case of the connector.
There should be no connection between the case
and any of the pins.
Rod Pressure Transducer
Rod Pressure Transducer
Rod Pressure Transducer
Rod Pressure Transducer
1. With the power to the computer off, disconnect the
rod pressure transducer from connector 2 on the
computer.
2. With the DVM set to the Ohms range, measure the
resistance between pins “C” an “D” of connector
MS3474W14-5PZ.
The resistance should be 350
Ω
±
10
Ω
3. With the DVM set to the Ohms range, measure the
resistance between pins “B” an “E” of connector
MS3474W14-5PZ.
The resistance should be 350
Ω
±
10
Ω
PRESSU RE TRA N SD U C ER
M S3475W 14-5PZ
A
B
C
E
D
“B” TO “E” 350
Ω
+ /- 10
Ω
“D ” TO “C ” 350
Ω
= + /- 10
Ω
PRESSU RE TRA N SD U C ER C O N N EC TO R
M S3475W -5PZ
BLU E, D RIV E-
PIN “D ”
RED , D RIV E +
PIN “C ”
350
Ω
+ /-10
YELLO W , SIG N A L +
PIN “D ”
G REEN , SIG N A L-
PIN ”E”
350
Ω
+ /-10
NON-CONNECTOR TYPE PRESSURE TRANSDUCER