H38 Absolute Explosion-Proof Encoder Shaft Runout: 0.0005 T.I.R. Electrical Starting Torque at 25° C: 4.0 in-oz (max) Specifications Bearings: Class ABEC 7 standard Code: 12 or 13 bits NB or GC; excess Shaft Material: 303 stainless steel gray and BCD available Enclosure: Die cast aluminum, hard anod- The H38 absolute is an Counts Per Shaft Turn: 4096 or ized with dichromate sealed finish. Shaft 8192 explosion proof version seals and sealed bearings are standard to Count Transition Accuracy: achieve environmental ratings. of the field-proven H25 ± 1/2 bit maximum 8 Bearing Life: 2 X 10 revs (1300 hrs at 2500 encoder series. The H38 10 Supply Voltage: 5–28 VDC RPM) at rated load; 1 X 10 revs (67,000 hrs is UL certified for NEMA at 2500 RPM) at 10% of rated load Current Requirements: 120 mA typical Class 4X and 6 (outdoor Maximum RPM: 10,000 RPM (see fre- quency response, below) Output Formats: Parallel: Gray Code, non-hazardous locations) –4 2 Natural Binary and Binary Coded Moment of Inertia: 4.1 X 10 oz-in-sec and Class 4X and 13 Decimal; Serial: Serial Synchronous Weight: 64 oz typical (approx 4 lbs) (indoor non-hazardous Interface (SSI); Analog: 4–20 mA, 0–10V locations). It is avail- Environmental Voltage/Output: (see note 5) able with single and 28V/V: Line Driver, 5–28 VDC in, V out Specifications triple certifications for = V in Enclosure Rating: NEMA 4 X & 6 (IP66), 28V/5: Line Driver, 5–28 VDC in, V out use in hazardous locations and outdoor Non-Hazardous locations, NEMA 4 X = 5 VDC & 13 (IP66), indoor Non-Hazardous locations includes a standard shaft seal, double 28V/OC: Open Collector, 5–28 VDC in Temperature: Standard operating all mod- OC bearing seals, and a cast aluminum housing out els, 0° to +70°C; Storage all models, -50° SSI: 5–28 VDC in/5V out with hard anodized and dichromate sealed finish. The H38 absolute encoder is suit- to +90°C; Extended temp testing avail.: for Protection Level: Reverse, overvoltage able for use in petroleum service industries, solvent refining operations, spray paint- UL, -40° to +80°C; for CEN, -50° to +90°C and output short circuit protection Shock: 50 g’s at 11 msec ing applications, and explosive dust environments. When your application needs the Frequency Response: 100kHz (1200 Vibration: 5 to 2000 Hz @ 20 g’s RPM for 12-bits, 600 RPM for 13-bits) ability to recover position information quickly after a power loss and you are operating Humidity: 100% RH Output Termination Pinouts: in a hazardous area—the H38 may be the answer to your needs. See table 3, back page Hazardous Area Rating: Underwriters The H38 Absolute Encoder is available with the following certifications: Laboratories listed for use in hazardous locations; NEMA Enclosure 7. Class 1, Mechanical EN 61000-6-4 and EN 61000-6-2 II 2 G Ex d IIB T4 Gb Group C & D, Division 1, NEC Class 2 Specifications circuits only, or Class 2, Groups E, F, Class I, Group C & D; IECEx (Exd IIB T4) Class II Group E, F & G; and G (see Table 1) Shaft Diameter: 3/8” nominal UL 14.0006X Class I, XXXXX Flats On Shaft: Two flats, 0.80” long The Mine Safety and Health Administration (MSHA) is an organization NOTES & TABLES: All notes and tables X 0.30” deep at 90º that operates in the United States and enforces compliance with safety referred to in the text can be found on the Shaft Loading: Up to 40 pounds axial back of this page. and health standards in the Nation’s mines. Consult factory for MSHA rated product. and 20 pounds radial applied 1/4” from housing H38 Absolute Encoder Ordering Options FOR ASSISTANCE CALL 800-350-2727 Use this diagram, working from left to right to construct your model number (example: H38D-12GC-28V/V-CW-SC-UL). All notes and tables referred to can be found onthe back of this page. H38 NUMBER OF BITS: VOLTAGE/OUTPUT: TYPE: OUTPUT TERMINATION: SPECIAL FEATURES: 12 = 12-Bits, 4096 counts per turn 28V/V = 5-28V in/out H = Heavy Duty; SC = Side Conduit, 1/2–14 NPSF S = Special features specified 13 = 13 Bits, 8192 counts per turn 28V/5 = 5-28V 5V in/ out 38 = 3.75” (dryseal) straight pipe threads on purchase order 14, 15, bits and HMT—Consult factory 28V/OC = 5-28V OC in/ out Square (consult factory) (Excess gray codes and BCD A1 =4-20mA See note 6 DIRECTION available–consult factory) A2 =0-10V HOUSING OF COUNT: S1 = RS422 Asynchronous CONFIGURATION: CW = Clockwise CODE TYPE: Serial Interface D = Standard CERTIFICATION: increasing count GC = Gray Code S3 =Serial Synchronous UL = Class I Group D Environments CCW = Counter NB = Natural Binary Interface CEN = UL Class I & II, Cenelec IIB Environments clockwise increasing BCD = Binary Coded Decimal (See note 5 and page 46 of the count X = Excess gray code 2008 BEI Specifying Guide for SSI) Tel: 805-716-0322/800-350-2727 | Fax: 805-968-3154 / 800-960-2726 1461 Lawrence Dr, Thousand Oaks, CA 91320 | www.beisensors.com Specification No. 02051-002 Rev.09-16 C These commodities, technology or software if exported from the United States must be in accordance with the Bureau of Industry, and Security, Export Administration regulations. Diversion contrary to U.S law is prohibited. H38 Absolute Explosion-Proof Encoder Options and Tables Interfacing Long Data Lines: Notes SPECIFICATION ADDENDUM, Serial Synchronous Interface SSI): Cable impedance creates a transmission delay, shifting the phase relationship between the clock pulse and the data. If this pulse shift exceeds 180 , then the wrong bit position will be sampled SSI output provides effective synchronization in a closed-loop control system. A clock See Doc. 01059-000 supplied with encoders Serial Synchronous Interface (SSI) SSI output provides effective synchronization in a closed-loop control system. A clock pulse train from by the receiver. The maximum allowable clock frequency, therefore, is a function of the cable pulse train from a controller is used to shift out sensor data: one bit of position data is REVISIONS length. For 24 AWG, stranded, 3 pair cable (BEI part number 37048-003 or equivalent) the group for Important Installation and Usage notes transmitted to the controller per clock pulse received by the sensor. The use of a a controller is used to clock out sensor data: one bit of position data is transmitted to the controller per one clock pulse received by the sensor. The delay is 1.36nS/ft. The table below shows the maximum transmission rate allowable as a function differential driver permits reliable transmission of data over long distances in LTR DESCRIPTION DATE APPR of cable length to ensure a phase shift of less than 90 . summarized here. environments that may be electrically noisy. The encoder utilizes a clock signal, AECO_500 4/13/05 use of a differential driver permits reliable transmission of data over long distances in environments that may be electrically noisy. The encoder utilizes provided by the user interface, to time the data transmission. Receiving electronics must CLOCK: Maximum (KHz) = 92,000/Cable Length (ft) include an appropriate receiver as well as line terminating resistors. An optional parity a clock signal, provided by the user interface, to time the data transmission. Receiving electronics must include an appropriate receiver as well as line bit is available to validate the transmitted data. Encoder Installation: terminating resistors. 1. Environment: Hazardous Locations — UL Features: Complies with UL and cUL requirements; Features : • Synchronous transmission • Transmission lengths to 1000 feet • Accepts clock rates from 100 KHz to 1.8 MHz CEN Shall comply with UL requirements plus Synchronous transmission RS422/485 compatible CENELAC/ATEX plus IECEx standards Transmission lengths to 1000 feet Cable impedance can create a transmission delay, in effect, shifting the phase Cable Length (feet) 50 100 200 300 500 1000 Data Transmission Sequence Accepts clock rates from 100 KHz to 1.8 MHz 2. WARNING: Open all circuits prior to connecting Max. Frequency (KHz) 1800 900 500 300 200 100 Parity bit option is available relationship between the clock pulse and the data. If this phase shift exceeds 1. Output driver of the encoder is a MAX 491 transceiver in transmit mode. The this product to power and controller. SSI 180°, then the wrong bit position will be sampled by the receiver. As a result, Compatible Serial Code (S3): 3. The installation must comply with NEC Class recommended receiver is a MAX 491 transceiver in receive mode. the maximum allowable clock frequency is a function of the cable length. For 2 circuits or with the regulations of the country Data Transmission TERM BOARD 2. Controller provides a series of pulses (or differential pulse pairs) on the FUNCTION CONNECTOR* CABLE H40 H38 Sequence: of use. 24 AWG, stranded, 3 pair cable (BEI part number 37048-003 or equivalent) CLOCK input lines. DATA+A YEL 1 4 4. AWG 14 - 22 stranded wire stripped to .25” DATA-H WHT/YEL 7 7 1. Data from the encoder is sent with a MAX 491 transceiver in transmit mode. It is the group delay is 1.36ns/ft. The table below shows the maximum transmis- recommended to use any RS-422/485 compatible receiv 3. On the first HIGH-to-LOW CLOCK transition, the encoder latches its data er and provide a termination resistor BLU CLOCK+ B 2 5 [6.3mm} is recommended. based on the RS-422/485 specification for your specific voltage and DATA line length. sion rate allowable as a function of cable length to ensure a phase shift of CLOCK- I WHT/BLU 8 8 5. Use agency approved 105° C minimum rated 2. The CLOCK signals are RS-422/485 compatible at the , differential current position and prepares to transmit. TTL, with 180 Ohm termination DIRECTION CONTROL C ORN 3 6 resistors internal to the encoder. A series of pulses from the controller, on the CLOCK less than 90°. ENABLE (OPTIONAL) J WHT/ORN 9 9 cable/conductors housed within an approved lines, advances the data. 4. Controller reads data on the falling edge of the next 15 clock cycles. SUPPLY VOLTAGE (+V)D RED 4 3 3. On the first HIGH-to-LOW CLOCK transition, the encoder latches its data at the current rigid conduit. position and prepares to transmit. The DATA signal during this transition is a START bit, BLK CIRCUIT COMMON (0V) F 5 2 5. The first bit is a START bit and is always HIGH. which is always HIGH. 6. Conduit runs must have a sealing fitting certified CASE GROUND G GRN 6 1 *Connector is a MS3102E18-1P, 10-pin connector on the encoder body and mates to an MS3106F18-1S connector or can be used with a standard cable/connector assembly, BEI P/N: 924-31186-18XX. 4. The encoder shifts data to the DATA line on each LOW-to-HIGH clock transition, beginning (XX = cable length in feet, ie. 10 = 10 feet) with the MSB. The controller reads data on the HIGH-to-L 6. Next comes 13 data bits beginning with the most significant bit (MSB) and OW transiton of the next 12 clock CLOCK, Maximum (kHz) = 92,000 / Cable Length (ft)CW to 60079-0 Ex d IIB immediately at the entrance cycles ending with the LSB. The parity bit (if parity option is specified) is clocked out on to the device. the 14th clock cycle. When the parity option is used ending with the parity bit. On 12 bit encoders, bit 13 is LOW. When parity is , the 13th bit output is a logic LOW on Direction Control: Standard is CW for increasing count when viewed from the shaf t end. Direction Control (Pin C) is normally HIGH (or N/C) and is pulled up internally to the positive supply voltage. To reverse the count direction, Cable Length (ft) 50 100 200 300 500 1000 a 12 bit Encoder or the LSB of a 13 bit Encoder. Pin C must be pulled to LO (0V) 7. Tightly close terminal block access cover prior 5. Parity is even. The sum of all data bits and the parity bit is even. not ordered, parity is LOW. 6. After the last CLOCK LOW-to-HIGH transition, a minimum of 30 microseconds must pass to applying power. Max Freq (kHz) 1800 900 500 300 200 100 before the beginning of the next CLOCK series. 7. After the last CLOCK HIGH-to-LOW transition, a minimum of 40 microsec- 8. For maximum bearing life, a flexible coupling SSI Compatible Output with Parity Option Timing Diagram: onds must pass before the beginning of the next CLOCK series. is recommended between encoder shaft and 20us Max 40us Min driving shaft. SSI Timing START OF Interfacing Long Data Lines NEXT CLOCK 9. Thread sealant compound should be used for CLOCK+ 1/2-14 fitting or cable gland to prevent ingress Ordering SSI : HOW TO SPECIFY SSI OUTPUT IN THE ENCODER MODEL NUMBER: 12 12 13 14 15 of contamination. Use the designation, S3 between the Code Format designation and the Connector START Parity START DATA+ MSB MSB-1 LSB12 LSB13 (Optional) During Use: BIT BIT designation. Example: H25D-SS-12GC-S3-CW-SM18 1. Keep terminal block access tightly secured 30us Min during use. redrawn DATE KRB I N D U S T R I A L E N C O D E R D I V I S I O N Example Model Number: UNLESS OTHERWISE SPECIFIED 04/06/05 2. DO NOT loosen two 5/16” set screws at DIMENSIONS ARE IN INCHES CHECKED BEI B E I T E C H N O L O G I E S , I N C. APPLY AFTER FINISH Encoder: H25D - SS - 12GC - S3 - SM18 - S TOLERANCES ON ENGR 7230 Hollister Avenue | Goleta, CA 93117-2891 | Tel: (805) 968-0782 | Fax: (805) 968-3154 opposite face. 63 To specify Specials: .XX ±.01 TITLE .XXX ±.005 APPR Output Code and Terminations (12 & 13 Bit) SSI Output Termination Table SSI Output -S = Parity Bit Maintenance and Service: ANGLES ± 0 30' SPECIFICATION ADDENDUM REMOVE BURRS AND BREAK ALL 1. There are no user serviceable parts inside. Serial Synchronous Interface (SSI) SHARP EDGES .010 MAX Cable Term. PARALLEL CODE TERMINATION TYPE ALL DIA. TO BE WITHIN .010 SIZE FSCM NO. DWG NO. REV SIZE FSCM NO. DWG NO. REV Encoder must be returned to factory for service. Conn I N D U S T R I A L E N C O D E R D I V I S I O N Board THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF Gray A 1RB90 A A 1RB90 Natural Binary Coded Cable Term Board 2. WARNING: Open all circuits to this product 924-02087-001 A 924-02087-001 BEI TECHNOLOGIES, INC. ANY REPRODUCTION, USE OR DISCLOSURE BEI B E I T E C H N O L O G I E S , I N C. OF THIS DOCUMENT WITHOUT WRITTEN CONSENT OF SCALE: NONE SHEET: 2/2 BEI TECHNOLOGIES, INC. IS EXPRESSLY PROHIBITED. Code Binary Decimal H38 & H40 prior to opening access cover to disconnect SCALE: NONE 924-02087-001 SHEET: 1/2 DATA + YEL 4 wires. 12 Bit 13 Bit 12 Bit 13 Bit DATA- WHT/YEL 7 11 12 40 MSB G G 2 2 A 11 12 0 WHT/BLK 1 CLOCK+ BLU 5 10 11 G G 2 2 B 10 11 0 WHT/BRN 2 CLOCK- WHT/BLU 8 9 10 30 G G 2 2 C0 9 10 WHT/RED 3 8 9 DIR CONTROL ORN 6 G G 2 2 D 8 9 0 WHT/ORN 4 7 8 CASE GROUND GRN 1 G G 2 2 A 7 8 1 WHT/YEL 5 7 6 7 CIRCUIT COMMON BLK 2 G G 2 2 B 6 1 WHT/GRN 6 5 6 G G 2 2 C +V SUPPLY VOLTAGE RED 3 5 6 1 WHT/BLU 7 4 5 G G 2 2 D 4 5 1 WHT/VIO 8 SHIELD DRAIN BARE — 3 4 G G 2 2 A 3 4 2 WHT/GRY 9 Direction of Count: Standard is CW increasing when viewed from 2 3 G G 2 2 B 2 3 2 WHT 10 the shaft end. Pin 18 is normally HI (or N/C) and is pulled up inter- 1 2 G G 2 2 C 1 2 2 GRY/BLK 11 nally to +V. To reverse the count direction, Pin 18 must be pulled LO (COMMON ). 0 1 LSB G G 2 2 D 12 0 1 2 GRY/BRN 12 Latch control: Encoder outputs are active and provide continuous 0 LSB G 2 A 13 0 3 GRY/RED 13 parallel position information when Pin 17 is HI (or N/C). Pin 17 is pulled up internally to +V. When Pin 17 is LO (COMMON) the 1 B3 0V (CIRCUIT COMMON) GRY/ORN encoder outputs are latched at the logic state that is present when DIRECTION OF COUNT ORN 18 the latch is applied and will stay latched until Pin 17 is no longer grounded. CASE GROUND GRN 16 0V (CIRCUIT COMMON) BLK 15 LATCH CONTROL YEL 17 +V (SUPPLY VOLTAGE) RED 14 SHIELD DRAIN — BARE Tel: 805-716-0322 /800-350-2727 Fax: 805-968-3154 / 800-960-2726 1461 Lawrence Dr, Thousand Oaks, CA 91320 www.beisensors.com 0539 12-24VDC (300mA MAX)