R&M Materials Handling HOIST MONITORS - Manual (Page 63)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
63/105
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
12.1.5 Dimensions
R
ai
l
M
o
u
n
ti
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g
27 43
97
K
A
E
4
0
0
-S
-I
N
+
IN +
S
0
V
1
0
V
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U
T
1 2 3 4
5 6 7
Z
E
R
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4
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1
60
1
/2 1
/1
GAIN
12.2 ESD142 amplifier + Strain Gauge
12.2.1 ESD142 Description
The ESD142 is a load sensor amplifier, which is used to amplify the load signal coming from a strain-
gauge type of load sensor to a suitable voltage level for the hoist-monitoring unit.
At the moment there are two versions, the ESD 142 and the ESD142/1. The basic model is the ESD 142,
which is used with full-bridge load sensors. The ESD 142/1 is the modified version, which is suitable for
half-bridge load sensors.
The units are adjusted by means of two trimmers, named “ZERO” and “GAIN”. With the ZERO-trimmer,
the 0% load adjustment is biased. The GAIN-trimmer is used to adjust the amplification factor in order to
reach the required output voltage at full load.
There are two LED’s, marked as “0%” and “100%”, indicating the status of the load.
Terminal Signal Device
1 0 VDC Terminal 30
2 0 VDC Sensor
3 Signal Terminal 26
4 Signal free
5 10 VDC Terminal 25
6 10 VDC Sensor
7 - IN Sensor
8 + IN Sensor
9 SHLD screen
10 4 VDC free