Red Lion ZMH User Manual

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MODEL ZMH - HEAVY DUTY LENGTH SENSOR

 HEAVY DUTY INDUSTRIAL CONSTRUCTION

 QUADRATURE OUTPUT

 BUILT-IN SPRING TENSIONING

 VERTICAL, HORIZONTAL, OR UPSIDE-DOWN MOUNTING

 EASY INSTALLATION

 VARIOUS MEASURING WHEELS AVAILABLE

 VARIOUS MOUNTING CONFIGURATIONS

Bulletin No. ZMH-A

Drawing No. LP0845

Released 03/14

DESCRIPTION

Designed for heavy duty sensing applications, the Heavy Duty Length

Sensor, Model ZMH, is versatile and easy-to-use.

It features a built-in spring-loaded torsion arm that provides a simple-to­adjust torsion load, allowing the unit to be mounted in almost any orientation,
including upside down. Using a properly selected wheel, the ZMH can be used
on almost any surface, while operating at speeds up to 3000 feet per minute.
Whether you need to measure speed, position, or distances, the Model ZMH is
the ideal solution.

Open Collector Output Wiring

The ZMH sensors have open collector outputs. An open collector output
brings the uncommitted collector of the encoder switching device to the external
world. Because the collector element is not associated with the sensor supply
voltage, the sensor output collector may be “pulled up” to external voltages
different than the encoder supply voltage (30 VDC maximum). NPN open
collector outputs are current sinking devices. An output signal will not be
generated unless a pull-up resistor is connected from the open-collector to the
positive side of an external supply. The same supply can be used for powering
the unit and for the pull-up resistor.

ORDERING INFORMATION

MODEL NO. DESCRIPTION PPR PART NUMBER

250 ZMH0250B

ZMH *

MBZM

* Mounting shaft not included.

Heavy Duty Length Sensor

with Quadrature Output

Mounting Bracket and Shaft N/A MBZM0001

Double Wheel Pivot Mount and Shaft N/A MBZM0002

500 ZMH0500B

1000 ZMH1000B

2000 ZMH2000B

2500 ZMH2500B

LENGTH SENSOR MEASUREMENT ACCURACY

Factors which affect measurement accuracy include Measuring Wheel
accuracy and wear, and material conditions. Ideally, materials which are hard,
thin and strong provide good readings, conversely, soft, thick and elastic
materials can present problems in obtaining true readings. Where this effect is
consistant, Counter or Rate Indicators with “input scaling” can compensate for
Measuring Wheel wear and material elastic and compliance errors. In addition,
English/Metric conversions may also be accomplished.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the
literature or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

CAUTION: Read complete

instructions prior to installation

and operation of the unit.

CAUTION: Risk of electric shock.

SPECIFICATIONS

ELECTRICAL SPECIFICATIONS

1. INPUT VOLTAGE: 4.75 to 28 VDC.

2. INPUT CURRENT: 100 mA max (65 mA typical) with no output load

3. OUTPUTS: NPN Open Collector Transistor, VOH = 30 VDC max.; 20 mA

max. current. Incremental - Two square waves in quadrature with A leading

B for clockwise rotation, as viewed from the wheel side.

4. MAX FREQUENCY: 200 KHz

5. NOISE IMMUNITY: Tested to BS EN61000-6-2; BS EN50081-2; BS

EN61000-4-2; BS EN61000-4-3; BS EN61000-4-6, BS EN500811

6. SYMMETRY: 180º (±18º) electrical

DIMENSIONS In inches (mm)

A LEADS B FOR
CW ROTATION

12" CIRC.

WHEEL SHOWN

5.25 (133.4)

6.25 (158.8)

Note: All dimensions are in inches with a tolerance of +0.01" unless otherwise specified.

FOR MOUNTING ON

+0.000

A ø0.625 SHAFT

-0.005

1/2-20, .500"
DEEP

3.85 (97.8)

2.75

(69.9)

5.00 (127.0)

1

1

ø0.375
(ø9.53)
SHAFT

2.50 (63.5)
BODY DIA.

5/32" HEX SOCKET

FOR SHAFT CLAMP

7. QUAD. PHASING: 90º (±22.5º) electrical

8. MIN. EDGE SEP: 67.5º electrical

9. ACCURACY: Within 0.017º mechanical or 1 arc-minute from true position.
(for PPR>189)

MECHANICAL SPECIFICATIONS

1. MAXIMUM MECHANICAL SPEED: 3000 RPM

2. SHAFT MATERIAL: Stainless Steel

3. SHAFT SIZE: 0.375"

4. RADIAL SHAFT LOAD: 10 lb. max. controlled by spring torsion.

5. STARTING TORQUE: 1.0 oz-in typical

6. ELECTRICAL CONNECTION: 2 meter Cable, (foil and braid shield, 24
AWG conductors).

FUNCTION CABLE WIRE COLOR

+VDC Red

Com Black

A White

B Green

Shield Bare

7. MOUNTING: 5/8" diameter thru hole with clamp

8. HOUSING: powder coated aluminum.

9. WEIGHT:

ZMH: 2.15 lb. (0.975 Kg)
MBZM0001: 1.5 lb. (0.68 Kg)
MBZM0002: 0.15 lb.. (68.04 g)

ENVIRONMENTAL SPECIFICATIONS

1. OPERATING TEMPERATURE: -20°C to 85°C

2. STORAGE TEMPERATURE: -25°C to +85°C

3. HUMIDITY: 98% RH non-condensing

4. VIBRATION: 10 g @ 58 to 500 Hz

5. SHOCK: 80 g @ 11 msec duration

6. SEALING: IP50

MOUNTING BRACKET - MBZM0001

This accessory angle mounting bracket allows for a variety of mounting
positions and makes installation of the ZMH even easier. Mounting shaft
included with mounting bracket.

Mounting

Shaft

DIMENSIONS In inches (mm)

3.00 (76.2)

1.50 (38.1)

1.00 (25.4)

Ø0.625

(Ø15.86

+0.000

-0.005
+0.01

-0.13

)

2.50

(63.5)

(44.4)

1.75

1.25

(31.7)

Ø0.281
(Ø7.14)

THRU

5x

DOUBLE WHEEL PIVOT MOUNT - MBZM0002

This accessory allows the unit to rotate freely to maintain equal pressure
on both wheels, accomodating uneven/angled surfaces and mounting
misalignment. Pivot mounting shaft included with MBZM0002. For
installation of unit, use the mounting bracket and shaft included with
MBZM0001.

Pivot Joint

7.5

Pivot Mounting
Shaft

Pivot
Mounting
Clamp

3.25

(82.6)

8.95

(227.3)

ADJUSTABLE

HEIGHT

1.00

(25.4)

3.50

(88.9)

4.50

(114.3)

2