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Code 12 or 13 bits NB or GC; excess gray and BCD available
Counts Per Shaft Turn 4096 or 8192
Output Format 2 channels in quadrature, 1/2 cycle index gated with negative B channel
Count Transition Accuracy ± 1/2 bit maximum
Supply Voltage 5 to 28 VDC 
Current Requirements 120 mA typical
Voltage/Output (see note 5)
28V/V: Line Driver, 5 – 28 VDC in, Vout = Vin
28V/5: Line Driver, 5 – 28 VDC in, Vout = 5 VDC
28V/OC: Open Collector, 5 – 28 VDC in, OCout
28V/5: Line Driver, 5 – 28 VDC in, Vout = 5 VDC
SSI: 5 - 28 VDCin/5Vout (consult factory, reference Figure 2)
Protection Level Reverse, overvoltage and output short circuit
(see note 5)
Frequency Response 100 KHz (1200 RPM for 12-bits, 600 RPM for 13-bits)
Output Terminations see Table 1 for Parallel outputs and Table 2 for SSI outputs.
Shaft Diameter 5/8” Nominal
Flats On Shaft Two flats, 0.75” long X 0.30” deep at 90º
Shaft Loading/Bearing Life Refer to figure 1
Shaft Runout 0.001” T.I.R. at mid-point of shaft
Starting Torque at 25°C 10.0 in-oz (max)
Bearings Class 52100 SAE high carbon steel, stainless steel option
Shaft Material 1070 carbon steel, 303 stainless steel optional
Enclosure Die cast aluminum, hard anodized with optional sealed finish.
Shaft seals and sealed bearings are standard to achieve environmental ratings.
Maximum RPM 10,000 RPM (see frequency response, below)
Coupling Windup The H40 uses an internal coupling.
Windup error (degrees) = a X 7.5 X 10-4 rad/sec2
where a = angular acceleration in rad/sec2
Weight Approx 9 lbs.
Enclosure Rating NEMA 4 X & 6 (IP66), outdoor Non-Hazardous locations, NEMA 4 X & 13 (IP66), indoor Non-Hazardous locations
Hazardous Area Rating The optional Underwriters Laboratories listed version is for use in hazardous locations;
NEMA Enclosure 7. Class 1, Group D, Division 1, NEC Class 2 circuits only
Temperature Operating, 0º to 70º C; extended temperature
testing available (see note 8); 80º C max for UL and CEN
approved units; storage; -25º to 90º C
Shock 200 g’s at 11msec
Vibration 5 to 2000 Hz @ 20 g’s
Humidity 100% RH