PT8CN. CANbus SAE J1939 Output Signal

Transcription

1 PT8N Nbus SE J939 Output Signal Industrial rade String Pot bsolute Linear Position to 6 inches (524 mm) luminum or Stainless Steel Enclosure Options NEM 6 / IP67 ENERL ull Stroke Ranges 2 to 6 inches Electrical Interface Nbus SE J939 Protocol Proprietary ccuracy Repeatability ±.2% full stroke Resolution ±.3% full stroke Measuring able Options stainless steel or thermoplastic Enclosure Material powderpainted aluminum or stainless steel Sensor plastichybrid precision potentiometer Potentiometer ycle Life Maximum Retraction cceleration Weight, luminum (Stainless Steel) Enclosure 3 lbs. (6 lbs.), max. ELETRIL Input Voltage 7 8 V Input urrent 6 m max. aud Rate 25K, 25K, or 5K via IP switches Update Rate ms. (2 ms. available, contact factory) ENVIRONMENTL Environmental Suitability NEM 4X/6, IP 67 Operating Temperature 4 to 85 (4 to 85 ) Vibration up to g to 2 Hz maximum 3.6 [9 mm] Output Signal: 5.6 [4 mm] The PT8N, using a high cycle plastichybrid potentiometer, communicates to your PL via the Nbus SE J939 interface. Suitable for factory and harsh environment applications requiring linear position feedback in ranges up to 6. s a member of elesco s innovative family of NEM 4 rated cableextension transducers, the PT8N installs in minutes by simply mounting it s body to a fixed surface and attaching it s cable to the movable object. Perfect parallel alignment not required. data stream { x x } (% fs.) (% fs.) 263 Plummer Street hatsworth, 93 tel: fax: measspec.com PT8N

2 I/O ormat and Settings Interframe Space Start of rame Identifier RTR it ontrol ield ata ield R Sequence ck Slot R elimiter ck elimiter End of rame Interframe Space bit 29 bits bit 6 bits 8 bytes 5 bits bit bit bit 7 bits 3 bits repetition = 8 msec. Identifier Example Message Priority uture Use J939 Reference Proprietary ata ield Type* Not Used Node I** Identifier it No Hex Value *Sensor field data can be factory set to customer specific value. **ustomer defined, set via ips 6. it values shown for example only, see ddress Setting below. ata ield = LS current % of measurement range byte = MS current % of measurement range byte 4 = error flag 5 = error flag Velocity ata Error lags urrent Measurement ount urrent % of Measurement Range 2 = LS current measurement count byte 3 = MS current measurement count byte 6 = LS velocity data byte 7 = MS velocity data byte urrent Measurement ount The urrent Measurement ount (M) is the output data that indicates the present position of the measuring cable. The M is a 6bit value that occupies bytes 2 and 3 of the data field. 2 is the LS (least significant byte) and 3 is the MS (most significant byte). The M starts at x with the measuring cable fully retracted and continues upward to the end of the stroke range stopping at x. This holds true for all ranges. onverting M to Linear Measurement To convert the current measurment count to inches or millimeters, simply divide the count by (total counts over the range) and then multiply that value by the full stroke range: ( current measurement count )X full stroke range Sample onversion: If the full stroke range is 3 inches and the current position is x2 (482 ecimal) then, ( ) X = inches.87 inches If the full stroke range is 625 mm and the current position is x2 (482 ecimal) then, ( ) X = mm 39 mm urrent % of Measurement Range The urrent % of Measurement Range is a 2byte value that expresses the current linear position as a percentage of the entire full stroke range. Resolution is. % of the full stroke measurement range. This value starts at x at the beginning of the stroke and ends at x3e8. Example: Error lags Hex ecimal Percent.%.% 2 2.2% E8.% x55 (yellow LE on controller board) indicates that the sensor has begun to travel beyond the calibrated range of the internal position potentiometer. x (red LE on controller board) indicates that the sensor has moved well beyond the calibrated range of the internal position potentiometer. If either error flag occurs within the full stroke range of the sensor, the unit should be returned to the factory for repair and recalibration. Velocity ata in bytes 7 6 is the change in the M (current measurement count) over a msec time period. This data can then be used to calculate velocity in a post processing operation. 7 6 HEX (ecimal) x () x7 (32767) x (65535) max max reverse forward velocity velocity Velocity alculation count change (. sec. time period ) Sample alculations Velocity (cts./ msec.) counts counts (no change) counts full stroke range X( ) able Extension (positive direction): 7 6 = x896 (43462 ec), full stroke = 6 in in in. / sec. (. sec ) X ( ) = able Retraction (negative direction): 7 6 = x68 (25 ec), full stroke = 6 in in. ( 7. in. / sec.. sec ) ( ) X = 2 PT8N tel: fax: measspec.com

3 Setting the ddress (Node I) and aud Rate ddress Setting (Node I) aud Rate Nus ontroller oard The ddress Setting (Node I) is set via 6 switches located on the 8pole IP switch found on the evicenet controller board located inside the transducer. The IP switch settings are binary starting with switch number (= 2 ) and ending with switch number 6 (= 2 5 ). The transmission baud rate may be either factory preset at the time of order or set manually at the time of installation. The baud rate can be set using switches 7 & 8 on the 8pole IP switch found on the evicenet controller board located inside the transducer address / baud rate switches IP IP2 IP3 IP4 IP5 IP6 address (2 ) (2 ) (2 2 ) (2 3 ) (2 4 ) (2 5 ) (decimal) IP7 IP8 baud rate 25k 25k 5k 25k = "" internal dip switches & controller board = "" to gain access to the controller board, remove four llenhead Screws and remove rear cover. Outline rawing: see eyelet detail eyelet detail.99 [25,] Ø.9 [4,9]* Ø.375 [9,52]**.8 [45,7].65 [4,9]**.8 [2,] 3.5 [88,9] 2.49 [63,3].5 [37,6] 3.6 [9,4].3 [33,3] 5.56 [4,2] max..6 [5,2] RNE 2,.6 [29,5] 5, 25, 5.66 [6,8] 5.99 [25,7] 2, 4.85 [2,6] 3, 6.52 [3,3] 3. [76,2] IMENSIONS RE IN INHES [MM] tolerances are ±.2 in. [±,5 mm] unless otherwise noted Ø.27 [6,8] thru (4 places).64 [4,6] note: *tolerance = +.5. [+.3.3] **tolerance = [+.3.3] tel: fax: measspec.com PT8N 3

4 Ordering Information: Model Number: Sample Model Number: PT8N 5 L N34 T J 5 32 S5 PT8N R J E H R E H range: enclosure measuring cable: measuring cable tension: cable guide: interface: baud rate: node I: electrical connection: 5 inches aluminum.34 nyloncoated stainless standard standard Nbus SE J939 5 k bits/sec. 32 decimal 5meter cordset with straight plug ull Stroke Range: R full stroke range, min: accuracy (% of f.s.): potentiometer cycle life*: in. 5 in. in. 5 in. 2 in. 25 in. 3 in. 4 in %.25%.5%.5%.5%.5%.5%.%.%.% 2.5 x x 6 5 x 5 5 x 5 5 x 5 5 x 5 5 x x x x 5 * cycle is defined as the travel of the measuring cable from full retraction to full extension and back to full retraction Enclosure Material: L SS 36 powderpainted aluminum 33 stainless steel 36 stainless steel Measuring able: cable construction: available ranges: general use: N34 S47 S3 V62 Ø.34inch nyloncoated Ø.47inch bare Ø.3inch bare Ø.58inch PV jacketed vectra fiber rope all ranges 5, 5, 2, 25, 3inch only 4, 5, 6inch only thru 3 inches only indoor outdoor, debris, high temperature outdoor, debris, high temperature high voltage or magnetic field Measuring able Tension: full stroke range cable tension specifications 2, inch: 5inch: 2, 4inch: 5, 25, 5inch: 3, 6inch: aluminum enclosure: stainless steel enclosure: T T2 T3 standard tension medium tension high tension 39 oz. 65 oz. 6 oz. 26 oz. 43 oz. 77 oz. 2 oz. 33 oz. 6 oz. 6 oz. 26 oz. 47 oz. 3 oz. 22 oz. 4 oz. tension tolerance: ± 5% maximum acceleration maximum acceleration maximum acceleration 5 g 25 g 4 g 6 g 2 g 8 g able uide: SS * R standard cable guide stainless steel cable guide polyurethane cable guide integral cable brush.87 in..87 in in..88 in. *note: all ranges up to 25 inches only tel: fax: measspec.com 4 PT8N

5 Ordering Information (cont.): aud Rate: kbaud 25 kbaud 5 kbaud Node I: select address ( 63 ecimal) Electrical onnection: H blank M5 S5 N5 5pin microconnector 5pin microconnector (no mating plug supplied) w/ mating plug #2 V+ 5pin microconnector and 5 meter length cordset w/straight mating plug 5pin microconnector and 5 meter length cordset w/9º mating plug #3 V # rain #5 NL #4 NH connector (contact view).6".32" O able (THIN) length: 6ft [5M] cable: Thin length: 6ft [5M] cable: Thin mating plug (contact view) pin signal wire color drain brown 2 V+ white 3 V blue 4 anh black 5 anl grey version:. last updated: May 29, 24 tel: fax: measspec.com PT8N 5