Bulletin No. ZBG/ZHG-D
Drawing No. LP0739
Released 02/15
MODELS ZBG AND ZBH STANDARD DUTY ENCODER (Replaces MODEL RPGB)
MODEL ZHG HEAVY DUTY ENCODER (Replaces MODEL RPGH)
CURRENT SINK OUTPUTS
HIGH PULSE PER REVOLUTION (PPR) RATES
Up to 1200 PPR for fine, high-resolution counting or precision speed
measurement from slow shaft speeds.
QUADRATURE OUTPUT
For position measurement, bi-directional counting and in systems with
backlash counting requirements.
AVAILABLE WITH MS AND M12 CONNECTORS
MODEL ZBG and ZBH - FOR GENERAL
INDUSTRIAL SERVICE (Replaces Model RPGB)
The units contain an L.E.D. light source and a photo sensor that scans a shaftmounted, slotted disc. An internal pulse-shaping amplifier circuit delivers a
rectangular pulse signal from the current sinking output in response to the passing
slots as it rotates. They can be direct-coupled to a machine shaft by means of a
flexible-bellows, spring, or rubber sleeve type coupling that allows for axial and
radial misalignment. They can also be coupled with light instrument timing-belts.
Timing-belt drives also allow convenient gear-up or gear-down speed ratio
changes that can be useful for obtaining non-standard PPR rates.
DIMENSIONS In Inches (mm)
MS TYPE CONNECTOR,
6-PIN, #14S-6P-6 or M12 CONNECTOR, 8-PIN
6-32 THD .25" DEEP ON
2 (50.8) DIA. BOLT CIRCLE
2.25
(57.15)
2.25 (57.15)
(BOTH SHAFT ENDS & BOTTOM)
.974 MAX.
(24.7)
.375 (9.5) DIA. SHAFT
.750 (19) LONG, BOTH ENDS
.095
(2.41)
2.25 (57.15)
MODEL ZHG - HEAVY-DUTY SEALED HOUSING
(Replaces Model RPGH)
These heavy duty units feature a heavy cast aluminum housing with 1/4"
thick aluminum cover plates and 0-ring seals. Heavy duty bearings are doublesealed and allow radial shaft loading of 40 lbs (18 Kg).
A 1/2" (12.7 mm) NPT Conduit entry permits signal wiring to be run via flexconduit to an internal terminal block. Electrical characteristics are identical to
those for the Model ZBG. Terminal board markings correspond to the Pin-Out
identification of the ZBG.
DIMENSIONS In inches (mm)
BOTTOM VIEW
.375 DIA. SHAFT
.75 LONG, 303
STAINLESS STEEL
6 (152.4)
TOP VIEW
REMOVE THIS SIDE
3 (76.2)
COVER TO EXPOSE
RIGHT SIDE VIEW (COVER REMOVED)
FRONT VIEW
3
(76.2)
3 (76.2)
1/4" - 20 THD, 1/2" DEEP ON 2" (50.8) DIA.
BOLT CIRCLE 4 HOLE PATTERN,
FRONT AND BOTTOM
1/2" NPT
CONDUIT
THD
TERMINAL STRIP
N.C.
6
N.C.
5
DATA B (QUAD)
4
DATA A ONLY
3
COMMON
2
+5 to +28VDC1
1
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
1. SUPPLY VOLTAGE:
+4.75 to +28 VDC @ 80 mA max. from 0 °C to 85 °C
+4.75 to +24 VDC @ 80 mA max. from 0 °C to 100 °C
2. OUTPUT: Current Sinking
ZBG and ZHG (Single Channel): 250 mA max.
ZBH (Quadrature): 250 mA max. current per output. Incremental - two
square waves in quadrature with Channel A leading Channel B for clockwise
rotation. (Quad. Phase relationship is 90° ±22.5 electrical degrees)
Note: NPN Transistor outputs have 1.5 KΩ load resistors returned to supply
for internal feed back purposes. This does not interfere with the ability to
use these outputs as conventional “Open-Collector” outputs as long as
the supply voltage for the ZB is supplied by the indicator or control
receiving its output signal. The ZB’s internal load resistor also allows the
output to be used as a current source, however, load current must be
limited to 1 mA max.
3. MAXIMUM FREQUENCY:
Single Channel: 20 KHz
Quadrature: 20 KHz
PPR available up to 1270 for both single channel and quadrature.
MECHANICAL SPECIFICATIONS
1. MAXIMUM SHAFT SPEED: 6000 RPM
2. SHAFT DIAMETER: 0.375" (9.5 mm)
3. RADIAL SHAFT LOAD: 40 lbs. operating (18 kg)
4. AXIAL SHAFT LOAD: 30 lbs operating (13.6 kg)
5. STARTING TORQUE:
ZBG & ZBH: 0.38 oz-in (2.68 N-mm)
ZHG: 3 oz-in (21.18 N-mm)
6. MOMENT OF INERTIA: 6.5 x 10-6 oz-in-sec
7. CONNECTIONS: 6-pin MS style or 8-Pin M12 connector. (Male) Mating
connector and cable assembly sold separately. For wiring cofiguration, see
Cable Connections. For Ordering Information, see Accessories.
8. HOUSING: Black non-corrosive finished 6063-T6 aluminum.
9. BEARINGS: ABEC3 double sealed ball bearings
10. WEIGHT:
ZBG & ZBH: 10 oz (283.5 g)
ZHG: 3.8 lbs (1.72 Kg)
ENVIRONMENTAL SPECIFICATIONS
1. OPERATING TEMPERATURE: 0 ° to 100 °C (See supply voltage)
2. STORAGE TEMPERATURE: -25°C to +85°C
3. HUMIDITY: 98% RH non-condensing
4. VIBRATION: 10 g @ 58 to 500 Hz
5. SHOCK: 50 g @ 11 msec duration
2
Cable Connections
The tables below list the pin connections from the ZBG and ZHG single
channel and ZBH quadrature encoder to the optional CCARPG or CCM cable.
FUNCTION
DATA B if appl. (quad)
NO CONNECTION
6-PIN
MS CONN
M12 CONN
5E
CABLE WIRE
COLOR
RED1A+VDC
BLACK2BCOMMON
WHITE3CDATA A
GREEN4D
—
ORDERING INFORMATION
600
60
100
600
100
600
10
12
100
120
500
600
PART NUMBER
ZHG06004
ZHG10004
ZHG12004
ZBG00602
ZBG01002
ZBG06002
ZBG10002
ZBG120021200
ZBG01003
ZBG06003
ZBH00102
ZBH00122
ZBH01002
ZBH01202
ZBH05002
ZBH06002
ZBH01003100
ZBH06003600
PPR*DESCRIPTIONMODEL NO.
Single Channel - Heavy Duty
ZHG
Rotary Pulse Generator
* For Dual Channel contact factory
1000
1200
Single Channel
General Service
ZBG
6-Pin MS Connector
1000
Single Channel General Service
M12 Connector
Dual Channel
General Service
ZBH
6-Pin MS Connector
Dual Channel General Service
M12 Connector
Note: Only factory stocked part numbers are listed. Consult factory for part
number and availability of other PPR and output configurations.
ELECTRICAL CONNECTIONS
SINGLE CHANNEL
LED
PULSE
SLOTTED
DISC
SLOTTED
DISC
SHAFT
SHAFT
PHOTO XISTOR
REF.
QUADRATURE
LED'S
PHOTO XISTOR'S
SHAPING
AMPLIFIER
DUAL
CHANNEL
PULSE
SHAPING
AMP.
1.5K
1.5K
1.5K
CABLE & CONNECTOR ASSY
(ORDER SEPARATELY)
+VDC
DATA A
COMMON
CABLE & CONNECTOR ASSY
(ORDER SEPARATELY)
+VDC
DATA A
DATA B
COMMON
Do not dispose of unit in trash - Recycle
ACCESSORIES
DESCRIPTIONMODEL NO.
Flexible Coupling (1" Length) 0.250"-0.375"
RPGFC
Mating 6-Pin MS Connector
2
Flexible Coupling (1" Length) 0.375"-0.375"
Flexible Coupling (1" Length) 0.375"-0.500"
Flexible Coupling (1" Length) 0.375"-6 mm
PART NUMBER
RPGFC002
RPGFC003
RPGFC004
RPGFC006
CCARPG00
CCARPG016-Pin MS Connector w/10 feet 22 AWG 4-conductor w/drain
CCARPG256-Pin MS Connector w/25 feet 22 AWG 4-conductor w/drain
CCARPG506-Pin MS Connector w/50 feet 22 AWG 4-conductor w/drain
CCM12894M12 Connector w/4 Meter 24 AWG 5-conductor w/drain
CCM12890M12 Connector w/10 Meter 24 AWG 5-conductor w/drain
LENGTH SENSOR CONVERSION BRACKET WITH 6-PIN MS CONNECTOR
ADAPTS APPROPRIATE ZBG and ZBH ROTARY PULSE GENERATOR TO LENGTH MEASUREMENT
DESCRIPTION
This conversion bracket allows the customer to assemble a custom length
sensor by purchasing the following items separately.
1. Length Sensor Conversion Bracket (P/N LSCB1000)
2. An encoder with appropriate connector, PPR and output type.
3. One or two measuring wheels. Install OF & OK measuring wheels with set
screw hub facing encoder shaft (as shown). Apply thread locking material to
wheel set screw threads during installation to the encoder shaft.
4. Hinge Clamp Assembly (P/N LSAHC001)
Note: To complete installation, insure guards, shields or other devices are in
place to protect personnel from rotating equipment.
The tubular arm length of this bracket, related to the wheel axis center-line of
the encoder is 6.8" similar to the length sensors. The 10´ long, 4-wire, shielded
cable with 6-pin MS connector (included with conversion bracket) has the same
color coding as described for the encoder cable P/N CCARPG01. Screws for
mounting the conversion bracket are included.
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. The great majority of
these situations, where this effect is consistant, can be compensated for by
ORDERING INFORMATION
MODEL NO. DESCRIPTION PART NUMBER
Length Sensor Conversion Bracket, w/10' Cable LSCB1000
LSCB
Length Sensor Conversion Bracket, w/25' Cable LSCB1025
Length Sensor Conversion Bracket, w/50' Cable LSCB1050
Hinge Clamp Assembly for Length Sensors &
-Conversion Bracket (Above)
LSAHC001
applying a multiplier to the quadrature output pulse train so as to obtain a
corrected measurement. 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 (See
RLC catalog for more information).
LENGTH SENSOR ACCESSORIES
SEPARATE LENGTH MEASURING WHEELS - DIMENSIONS In Inches (mm)
WHEEL
CODE
8-32 UNF
Set Screw
.376"
(9.6)
Bore
+.001"
-.000"
Cast
Alum.
3/8"
(9.5)
OR
Round Section Replaceable
Tire .210" Section Dia.
Black Neoprene
FOR USE ON: Metal, paper,
foil, film and hard plastics.
Line contact on material
being measured,
convenient when available
measuring track is narrow
or for measuring on end of
roller beside passing
material.
Max. Speed: 600 RPM
WHEEL
CODE
.376"
(9.6)
Bore
+.001"
-.000"
OF
(25.4)
Alum.
1"
Tan, Smooth Polyurethane
Tread
10-32 UNF
Set Screw
Cast
FOR USE ON: Soft, smooth
materials such as soft
paper, matting, cardboard,
fine weave textiles. Broad
wheel tread minimizes
contact pressure and tan
polyurethane tread
minimizes marking.
Max. Speed: 600 RPM
Balanced version of 1ft.
circumference available.
Balanced to ANSI S2.191989 Quality Grade 6.3 @
3000 RPM.
WHEEL
CODE
.376"
(9.6)
Bore
+.001"
-.000"
OK
(25.4)
Diamond Knurled Aluminum
Tread
Cast
Alum.
1"
10-32 UNF
Set Screw
FOR USE ON: Rubber,
coarse weave fabrics,
rough wood surfaces,
foam, insulation.
Max. Speed: 600 RPM
Balanced version of 1ft.
circumference available.
Balanced to ANSI S2.191989 Quality Grade 6.3
@ 3000 RPM.
SELECTING APPROPRIATE WHEEL SIZE & PPR (Pulses Per Rev.) OF ROTARY PULSE GENERATOR
When the desired output of a length sensor and wheel combination is either in feet or inch units, selection
of the proper combination is relatively straight forward. For example, with a 1-foot wheel circumference, a
1 PPR Rotary Pulse Generator will deliver 1 pulse/ft, 12 PPR would deliver 12 pulses/ft (1 pulse/inch); 100
PPR would yield 100 pulses/ft; and 120 PPR would permit measuring to 1/10th of an inch (1/120th of a foot).
3
WHEELS & REPLACEMENT TIRES FOR CODE OR WHEELS
ORDERING INFORMATION
TOLERANCEWHEEL CODE CIRCUMFERENCE PART NUMBER
1 foot (1/3 yd) ±0.40% WF1000OR
OR
1/3 meter ±0.40% WM0333OR
4/10ths yard ±0.40% WY0400OR
4/10ths meter ±0.40% WM0400OR
1 foot (1/3 yd) ±0.35% WF1000OF
OF
1/3 meter ±0.30% WM0333OF
4/10ths yard ±0.30% WY0400OF
4/10ths meter ±0.30% WM0400OF
BF (Balanced) 1 foot (1/3 yd) ±0.40% WF1000BF
Note: After installation of measuring wheels, ensure guards,shields or other
devices are in place to protect personnel from rotating equipment.
WHEEL CODE CIRCUMFERENCE TOLERANCE PART NUMBER
OK
BK (Balanced) 1 foot (1/3 yd) ±0.35% WF1000BK
Replacement Tires
for OR Wheels
MODEL LSAHC - LENGTH SENSOR HINGE CLAMP ASSEMBLY
1 foot (1/3 yd) ±0.35% WF1000OK
1/3 meter ±0.30% WM0333OK
4/10ths yard ±0.30% WY0400OK
4/10ths meter ±0.30% WM0400OK
1 foot (1/3 yd) TORF1000
1/3 meter TORM0333
4/10ths yard TORY0400
4/10ths meter TORM0400
The Length Sensor Hinge Clamp Assembly provides an easy method for
attachment and mounting of the Length Sensors and LSCB1 Conversion
Bracket. The removable top on the solid zinc LSAHC mounting block
allows quick installation of the Length Sensor handle tube and provides
secure clamping retention. The mounting block pivots freely in zinc right
angle brackets to allow mounting the assembly via clearance holes for 1/4"
dia. bolts.
The lock washers must be used as indicated (between the bolt head and
the top clamp piece). Assemble the top clamp piece as follows.
1. Tighten both bolts so that the top clamp half draws down evenly on
the sensor tube.
2. Tighten the bolts until both lock washers are flat.
3. Then turn each bolt an additional ½
to ¾ turn.
DIMENSIONS In inches (mm)
FRONT
VIEW
TOP
VIEW
(86.4)
2.5 (63.5)
1.25
(31.8)
3.4
2.9
(73.7)
4X Ø 0.31 (7.9)
Lock washers (2) must be
installed between bolt heads
and top clamp piece.
.25 (6.3)
E-clip retaining ring (2)
must be installed in slots.
.88
(22.4)
SINGLE WHEEL
.85
(21.6)
2.93 (74.4)
DUAL WHEEL 4 (101.6)
Model ZGH Shown
WHEEL
RADIUS
OMITTED ON
SINGLE SHAFT UNITS
THIS WHEEL AND SHAFT
6.9 (175.3)
CAUTION: Downward tension
on signal cable can cause
wheel(s) to lift. Make sure
cable is clamped to
machine frame near
encoder and allow slack.
NOTE: The weight at the
Length Sensor unit
provides sufficient traction
for accurate operation
when mounted as shown,
with arm angle from
horizontal not exceeding
±30°, and with hinge clamp
toward the far extreme of
the extension arm.
1.9
(48.3)
0.75 (19.0)
4.50 (114.3)
5.70 (144.8)
2.00
(50.8)
1.50
(38.1)
0.75
(19.0)
ORDERING INFORMATION
MODEL NO. DESCRIPTION PART NUMBER
LSAHC LSAHC001Length Sensor Hinge Clamp Assembly
.88 (22.4)
Model ZFH Shown
Length Sensors should be mounted so measuring
wheel(s) contact ribbon, strip or web as it passes over
a roller. As an alternative, wheel(s) can be driven by
roller surface next to material being measured.
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