AMETEK 925 Linear Cable Reel Sensor User Manual
Principles of Operation
The Series 925 Linear Cable Reel can be used in any linear application up to 1200 inches.
The system consists of a heavy duty spring motor assembly attached to a precision
machined cable drum. As the cable is pulled off of the precision drum, the drum rotates
a shaft connected to it. This shaft is precisely geared such that the full number of
revolutions of the drum is equal to the appropriate number of revolutions required by
the chosen sensor.
Applications
The Series 925 can be used in any industrial application to monitor a linear or reciprocating machine motion.
The sensor package, along with the associated electronics (i.e. programmable logic control
ler, programmable limit switch, counter card, etc.) can sense the position of any linear
motion and can, therefore, be used to control machines.
Advantages
-
This approach to machine positioning has several advantages over traditional limit
switches. In hostile environments, such as many steel mill applications, the cable reel
sensor can be mounted remotely. This protects the sensor from excessive heat, steam,
water, chemicals and physical damage. In addition, mounting alignment is not critical
in that the cable can be mis-aligned somewhat without harm, thus saving installation
time. The variety of sensors available allows the system to be easily integrated to existing
machine controls.
Part Numbering
925 A1
Cable Reel
Sensor
Hardware Type
A1 = 0 - 96 inch Stroke
A2 = 97 - 192 inch Stroke
B1 = 193 - 480 inch Stroke Single Spring
B2 = 193 - 480 inch Stroke Double Spring
C = 481 - 1200 inch Stroke
Active Stroke in Inches
Initial Cable Lead in Inches
First 72 inches of intial lead is no charge. Cable lead
above 72 inches an additional charge per inch.
Leave blank if no initial cable lead required.
Sensor Type
S = Single-turn Resolver
M = Multi-turn Resolver
P1 = Single-turn Potentiomenter
P2 = Multi-turn Potentiometer
E1 = Provision for an Incremental Encoder*
E2 = Provision for an Absolute Sensor*
DN = Single-turn Resolver with DeviceNet Interface
CO = 4 - 20mA Output (Resolution is 1,000 points of total stroke)
100
12
S
X
Options
X = None
* In instances where provisions for a customer supplied sensor are required, the following points must be covered:
A. A detailed dimension drawing of the sensor to be coupled must be supplied
B. A custom dimension/approval drawing will be made prior to manufacturing.
C. Special gearing of sensor may require an additional charge.
Sheave Assemblies
Description Part Number
Horizontal
Vertical
PSD0102600
PSD0102500
Description
Resolver & Mating
Connector
Replacement Spring Assembly
Description
Spring motor for A1&
A2 Style Units
Spring motor for B &
C Style Units
Points to note when ordering a linear cable reel sensor:
1. Hardware types determine the maximum capable stroke of each style. The actual stroke is customer specified. Three
initial wraps minimum remain on cable drum after the stroke length is reached. Pulling the cable out to its physical
maximum length may damage the unit.
Part Number
M0352900
SD039220
Resolver
Part Number
SD0308900
Cable Assembly
Part Number
SD0414600L__
2. Standard gearing of single-turn sensors is such that the active stroke of the cable reel will rotate the sensor 350 degrees.
Multi-turn sensors will rotate the maximum number of turns over the active stroke. Requests for gearing other than the
above must be called out clearly on order.
3. Mounting of customer supplied sensors is done in the most expedient way possible. Special mounting requirements
must be specified clearly on order.
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