MODELS ZOD AND ZOH - THRU-BORE ROTARY PULSE GENERATORS
(ZOH REPLACES THE MODEL RPGO)
Bulletin No. ZOD/ZOH-A
Drawing No. LP0735
Released 03/10
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion.net
GENERAL DESCRIPTION
The Model ZOD and ZOH are Thru-Bore Encoders. The ZOD has a bore of
0.25" (6.35 mm) and the ZOH is a 0.375" (9.5 mm) bore. These units are ideal
for applications requiring a miniature, high precision, low cost encoder,
designed with all metal construction for years of trouble-free operation.
The encoders have a flexible butterfly mount and blind hollow shaft. These
encoders use two set screws that are 90° apart to clamp the encoder's hub to the
motor shaft. The NPN Open Collector outputs are each current limited to 100
mA. The outputs are standard quadrature with index, and are available in
resolutions up to 2500 pulses per shaft revolution. The quadrature separation is
typically 90 electrical degrees. Output A leads output B for clockwise rotation
of the encoder shaft.
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
1. SUPPLY VOLTAGE: 4.75 to 28 VDC, 100 mA max. with no output load
2. OUTPUTS: NPN Open Collector Transistor, V
OH
= 30 VDC max.; 20 mA
max. current. Incremental - Two square waves in quadrature with A leading
B for clockwise rotation.
3. MAX. FREQUENCY: 200 KHz
4. INDEX: NPN Open Collector Transistor, V
OH
= 30 VDC max.; 20 mA max.
current. Once per revolution centered over output Channel A. Index is a
positive going pulse.
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: 180° (±18°) electrical
7. QUAD PHASING: 90° (±22.5°) electrical
8. MIN EDGE SEP: 67.5° electrical
9. ACCURACY: Within 0.017° mechanical or 1 arc minute from true
position (for PPR>189)
MECHANICAL SPECIFICATIONS
1. MAXIMUM MECHANICAL SPEED: 8000 RPM
2. BORE SIZE:
ZOD: 0.25" (6.35 mm)
ZOH: 0.375" (9.5 mm)
3. BORE TOLERANCE: -0.0000"/+0.0006"
4. USER SHAFT TOLERANCES:
Radial Runout: 0.008" max
Axial Endplay: +/- 0.030" max
5. STARTING TORQUE: 0.6 oz-in (4.24 N-mm)
6. MOMENT OF INERTIA:
6.7 x 10
-5
oz-in-sec
2
(4.8 gm-cm
2
)
7. ELECTRICAL CONNECTIONS:
Cable is 36" (914.4 mm) in length with 24 AWG conductors w/shield.
8. MOUNTING: 1.811 (46 mm) slotted flex mount
9. WEIGHT: 3 oz. (85.0 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: IP64
Open Collector Output Wiring
The ZOD and ZOH encoders 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
+VDC
FUNCTION
Red
WIRE COLOR
Common Black
Data A White
Data B Green
Index Z Orange
M3 OR 6-32
MAX. SCREW SIZE
M3 SET SCREWS
2X 90°
ROTATIONAL ADJUSTMENT
30.00°
1.00 (25.4)
0.07 (1.8)
0.80 (20.3)
BLIND BORE DEPTH
Ø1.811
(46.0)
Ø2.16
(54.9)
CABLE LENGTH
36 (914.4) STANDARD
DIMENSIONS In inches (mm)
0.25" Thru-Bore
MODEL NO.
Thru-Bore Rotary Pulse
Generators
60 ZOD0060A
0.375" Thru-Bore
ZOH0060A
100 ZOD0100A ZOH0100A
DESCRIPTION
500 ZOD0500A ZOH0500A
PPR
PART NUMBER
600 ZOD0600A ZOH0600A
ZOD
&
ZOH
1000 ZOD1000A ZOH1000A
1200 ZOD1200A ZOH1200A
2000 ZOD2000A ZOH2000A
2500 ZOD2500A ZOH2500A
Only factory stocked part numbers are listed. Consult factory for part
number and availability of other PPR and output configurations.
