This document provides information about Rotech Systems and their motion sensor products. Rotech has been monitoring equipment since 1983 and offers reliable monitoring solutions including shaft encoders, vibration sensors, and conveyor belt wheel sensors. The document provides details on various Rotech sensor models, including the PE4000 polypropylene shaft encoder, VS4000 vibration sensor, and PWE6000 conveyor belt wheel sensor. Installation and commissioning instructions are also provided.

1. www.rotechsystems.co.uk
Product Selection
Why Accept Anything Less?
Monitoring the world
since 1983
ROTECH FOR RELIABILITY!
Monitoring Solutions
SYSTEMS & ENCODERS
Monitoring Solutions For Your Equipment
Speed Monitoring
Safety Interlocking
Rotation Control
End Of Shaft Mounted Motion Sensors
Wheel Driven Trailing Arm Motion Sensors
For monitoring:
•Belt slip
•Belt speed measurement
•Belt weighers/scales
•Distance/length measurement
•Belt Stopped Alarm
PWE 6000
Open Frame
Utilising PE 4000 series sensor
•Extremely robust
•Self contained, easy to fit
•Maintenance free for life
•Pulse rates from 1 to 1000
•Range of signal outputs
•To suit all Industrial applications
PE 4000
Polypropylene Body
Low Cost
For monitoring:
•Speed
•Distance
•Direction
•Belt Slip
•Shaft Stopped
•Underspeed
•Overspeed
•Safety guards interlocking
SSE 2000
Stainless Steel Body
Also available in 3000 Series
Extra Heavy Duty
For use in the most severe arduous
environments
Screen Vibration Sensors
VS 4000 Series
Pulsed output Type E3 10-30 Volts DC
Totally sealed solid state operation
Monitoring Vibrating Screens For:
* Slowdown
* Stoppage
* Breakage
* Irregular Vibration
•‘V’- Belts Damage
Used with SR4000 Series speed relays or PLC, gives an alarm indication
of screen problems, stops screen drive motor and/or stops infeed conveyor.
ROTECH products can be used whenever information on
shaft speed, position, completed revolutions, etc, is required,
for indication, control, interlocking, alarm initiation, etc.
VSS 4000 Series
Trip Set Output 1 to 2000 Throws Per Minute DC 10-30 Volts
The VSS 4000 Series Screen Vibration
Sensor/Feeder Vibration Monitoring Unit
with integral trip level logic circuit.
Can be connect directly to PLC.

2. www.rotechsystems.co.uk
Product Information
Monitoring the world
since 1983
SYSTEMS & ENCODERS
PE 4000 Series
Polypropylene Body
Heavy Duty – End of ShaftWhy Accept Anything Less?
ROTECH FOR RELIABILITY!
The PE 4000 series of Rotech shaft encoders are manufactured in an extremely tough and durable
30% glass fibre reinforced polypropylene.
Installation is simple & easy, just one 12mm threaded hole in the end of the shaft being monitored or
using the unique ‘Mag‐con’ magnetic connector.
A wide range of number of pulses per revolution are available together with AC and DC electrical
outputs.
FOR MONITORING:
• Speed
• Distance
• Direction
• Belt slip
• Shaft stopped
• Underspeed
• Overspeed
• Safety guards interlocking
FEATURES:
•Low cost
•Totally self contained (no guards required)
•Maintenance free for maximum reliability
•1 to 40 pulses per revolution
•Environment ingress‐IP66
•‐25 to +100 deg Celsius versions available
• .
MAG‐CON
MAGNETIC CONNECTOR
For quick and easy installation of Rotech shaft mounted sensors & encoders
IMPORTANT NOTE:
MAXIMUM OPERATING SPEED IS 300RPM
RECOMMENDED MINIMUM
SHAFT DIAMETER FOR FITTING=35MM
ATEX

3. Dimensions and Installation Information
Tel : +27 (0)13 693 8938/9 Website: www.rotechsystems.co.uk
Fax: +27 (0)13 693 8940 Email: rotechsystems@mweb.co.za
Fax2Mail: +27 (0)86 616 7839
Monitoring the world
since 1983
SYSTEMS & ENCODERS
Type E (N.P.N) 10-30Vdc
Brown
Black
Blue
Max frequency = 600Hz
Black
Available Pulse Rates (PPR)
1,2,4,5,6,8,10,12,16,20,30,32,40,50,60,100,120,180,240,250,300,360,500,1000 (Dependent Upon Output Type)
Type E2 (P.N.P) 10-30Vdc
Brown
Blue
Max frequency = 600Hz
Type E3 (N.P.N) 10-30Vdc
Brown
Blue
Max frequency = 1000Hz
Type W 20-240V AC/DC
(1 to 30 PPR only)
Type N (Namur) 8-2 Vdc (1KΩ)
Intrinsically safe circuits
Brown
Blue
Black Black
Type E4 (N.P.N + P.N.P.- 2 Wire) 10-30Vdc
PNP
NPN
Brown
Brown
Blue
Blue
Max frequency = 1300Hz
Max frequency =
25Hz (AC) 1000Hz (DC)
Type E3 Q (Quadrature) 10-30Vdc
Red
Green
Screen (Ground)
VE Supply
VE Supply
CH “A” Leads CH “B”
for clockwise rotation
viewed from shaft end
of encoder
Channel “A”
Channel “B”
Type E2 Q (Quadrature)
1 to 40 PPR inclusive
Max frequency = 600Hz
Brown
Black
Blue
Black
Load
+
+
-
-
Brown
Blue
White
Max frequency = 2000Hz
Brown
Blue
Shown in millimetres
12mm Fixing bolt
(10mm/16mm Optional)
Flexible liquid tight conduit
16mm DIA X 900mm Long
C/W – 20mm threaded
Gland termination
Electrical Outputs

4. www.rotechsystems.co.uk
Product Information
Monitoring the world
since 1983
SYSTEMS & ENCODERS
Why Accept Anything Less?
ROTECH FOR RELIABILITY!
Mag ‐ Con
Magnetic Connector
For quick and easy installation of Rotech shaft encoders & speedswitches
No drilling and threading of shaft required, simply attach using mag-con
Installation instructions
1. Always observe lock-out and tag-out procedures during and after installation
2. Mag-con contains a powerful magnet - do not place anything between magnet and
metal - personal injury may occur.
3. Using a 10mm Allen wrench and a 25mm open ended spanner attach the rotech unit
To the mag-con
4. It is recommended that a film of silicon grease is applied to the end of the shaft before
Installing the mag-con
5. Attach mag-con to the centre of the shaft.
(Absolute centre not necessary)
6. Consult Rotech installation instructions for further information.
7. Do not remove installed Rotech while shaft is rotating, serious injury may occur.
8. Mag-con is not compatible with stainless steel shafts.
9. This magnet will erase magnetic strips from credit cards/door keys and other
magnetic sensitive items.
Note - maximum speed for mag-con is 300 R.P.M
Recommended minimum shaft diameter for fitting = 35mm

5. www.rotechsystems.co.uk
Product Information
Monitoring the world
since 1983
SYSTEMS & ENCODERS
Why Accept Anything Less?
ROTECH FOR RELIABILITY! VS 4000 Series
Vibration Sensor Relay
Heavy Duty
Monitoring vibrating screens for slowdown, stoppage,
blockage or irregular vibration
Can be used with Rotech SR 4000 series speed relay or connection directly to plc, computers, data
loggers, etc.
Gives a signal to stop screen drive motor and/or stop in‐feed conveyor.
Tough, robust and easily installed, units are designed for long and durable service in the harshest
of environments.
For monitoring:
•Vibrating screens
•Slowdown
•Stoppage
Features:
•Totally self contained (no guards required)
•Maintenance free for maximum Reliability
•Dc output ‐ plc/speed relay compatible
•Environment ingress ‐ IP67
•Up to 2000 VPM
•Irregular vibration
•Blockage
•Drive belt slip

6. Dimensions and Installation Information
Tel : +27 (0)13 693 8938/9 Website: www.rotechsystems.co.uk
Fax: +27 (0)13 693 8940 Email: rotechsystems@mweb.co.za
Fax2Mail: +27 (0)86 616 7839
Monitoring the world
since 1983
SYSTEMS & ENCODERS
Shown in millimetres
Cable
screened/shielded
or wire armoured
Flexible
conduit
1.5 Metres
Angled sensor bracket
bolted or welded to screen
sideplate.
IMPORTANT
Align sensor bracket in main
direction of screen movement
Leave conduit loop to allow for
movement of screen
Local junction boxTo control panel
Environment ingress – IP67
Type E3 (N.P.N. + P.N.P) 10-30 Vdc
Max frequency = 100Hz
Electrical connections
Supply 10 to 30 Vdc
Output tupe E3 (PNP + NPN)
70
40
80
46
+ Brown
Black
- Blue

7. www.rotechsystems.co.uk
Product Information
Monitoring the world
since 1983
SYSTEMS & ENCODERS
Why Accept Anything Less?
ROTECH FOR RELIABILITY! PWE 6000 Series
Conveyor Belt Wheel Sensor
Unit Type
For monitoring belt speed, slip
& distance measurement
For monitoring:
•Belt speed
•Belt slip
•Belt stopped
FEATURES:
•Totally enclosed & self contained trailing arm running on return side of conveyor belt
•Maintenance free for maximum reliability
•Non standard wheel diameters available
•“Rapid fix” installation kits available
•1 to 1000 pulses per revolution (multiple outputs ac/dc)
•Environment ingress - ip66
•-25 to +100 deg Celsius versions
•
Tough, robust and easily installed, units are designed for long and durable service in the harshest of
environments.
•Belt Weighers
•Distance/length measurement
ATEX

8. Dimensions and Installation Information
Tel : +27 (0)13 693 8938/9 Website: www.rotechsystems.co.uk
Fax: +27 (0)13 693 8940 Email: rotechsystems@mweb.co.za
Fax2Mail: +27 (0)86 616 7839
Monitoring the world
since 1983
SYSTEMS & ENCODERS
Type E (N.P.N) 10-30Vdc
Brown
Black
Blue
Max frequency = 600Hz
Black
Available Pulse Rates (PPR)
1,2,4,5,6,8,10,12,16,20,30,32,40,50,60,100,120,180,240,250,300,360,500,1000 (Dependent Upon Output Type)
Type E2 (P.N.P) 10-30Vdc
Brown
Blue
Max frequency = 600Hz
Type E3 (N.P.N) 10-30Vdc
Brown
Blue
Max frequency = 1000Hz
Type W 20-240V AC/DC
(1 to 30 PPR only)
Type N (Namur) 8-2 Vdc (1KΩ)
Intrinsically safe circuits
Brown
Blue
Black Black
Type E4 (N.P.N + P.N.P.- 2 Wire) 10-30Vdc
PNP
NPN
Brown
Brown
Blue
Blue
Max frequency = 1300Hz
Max frequency =
25Hz (AC) 1000Hz (DC)
Type E3 Q (Quadrature) 10-30Vdc
Red
Green
Screen (Ground)
VE Supply
VE Supply
CH “A” Leads CH “B”
for clockwise rotation
viewed from shaft end
of encoder
Channel “A”
Channel “B”
Type E2 Q (Quadrature)
1 to 40 PPR inclusive
Max frequency = 600Hz
Brown
Black
Blue
Black
Load
+
+
-
-
Brown
Blue
White
Max frequency = 2000Hz
Brown
Blue
Shown in millimetres
Electrical Outputs
580
200
160 135
Centre
175
Flexible liquid tight conduit
16mm DIA x 900mm long
C/w - 20mm threaded
Gland termination
2 M10 fixing holes
Pivot bracket
Solid rubber wheel
PE4000 series unit

9. www.rotechsystems.co.uk
Why Accept Anything Less?Monitoring the world
since 1983
Product Information
Commissioning & Testing
End of Shaft Mounted Encoders
SYSTEMS & ENCODERS
Installation
1. Drill & tap end of shaft to be monitored (refer to “Mag-con” data sheet for magnetic connector usage)
2. Remove rear cover plate from Rotech
3. Install Rotech to end of shaft using socket cap bolt provided. Ensure bolt does not ‘bottom’ in tapped
hole, slippage may occur if shaft faces are not firmly in contact.
4. Refit rear cover plate to Rotech
5. If fitted - secure flexible restraining strap to convenient point on machine
6. Cable as per drawing above
7. Refer to appropriate Rotech data sheet for output type connections
Commissioning & testing
Important
All wiring must be in accordance with local and national electrical codes and should only be undertaken by an experienced and professional
Qualified electrician.
All disconnections and connections must be made with the power supply switched off.
To test the Rotech unit it must be connected to it’s power source and associated control circuit I.E. “Rotech” speed relay, plc,
Computer, etc. And for power to be switched on.
Rotech sensor output type E, E2, E3
Connect a 0 to 30vdc voltmeter between brown and blue connections
Voltmeter should indicate D.C. Supply voltage of between 10 and 30vdc
Now Connect the voltmeter between the black and blue connections.
Rotate Rotech unit very slowly, voltmeter should indicate on/off pulses between 0vdc and the nominal
Supply Voltage (Supply Voltage Minus 1 To 2 Vdc)
Rotech sensor type N
Connect a 0 to 10ma Multimeter in series with the blue wire connecting the Rotech unit to it’s control circuit
rotate the Rotech unit very slowly, Multimeter should indicate on / off pulses of less than 1ma to greater than 3ma.
See note * 1 below
Rotech sensor type W
Connect a 0 to 240vac voltmeter between the brown connection and 0 vac, verify the supply voltage is present.
Now connect the voltmeter between the blue connection and 0 vac.
Rotate the Rotech unit very slowly, the voltmeter should indicate on / off pulses of between 0v and the supply voltage.
See note * 1 below
Note * 1
* At higher speeds the meter will not respond quickly enough to the on / off pulses. It will display an average value between
The max and min levels.
* The number of on / off pulses for one complete revolution should be the same as detailed in the Rotech Product data sheets
I.E. 1,10,120,360,500 etc.
Cable
screened / shielded
or wire armoured
To drive control panel
Flexible Conduit
Rotech motion sensor
end of shaft
mounting type
Local Junction Box
Securely attach
retaining strap
to machine framework.
Allow for movement!