Absolute Encoder CAS38—LB or R4B

  • A “magnetic detection mode”, with excellent impactand vibration resistance.
  • 4mAand 20mA corresponding values ​​can be set and fine-tuning.
  • Built-in signalconverter chip, 4 ~ 20mA analog current output for easy connection to a variety of devices.
  • Multi-purpose,multi-functional, directly corresponds to the angle, length and speed measurement.
  • Wideoperating voltage, low current consumption.
  • Clampingflange, servo flange or blind hollow shaft, the international standard structure.
  • Externalresetting line to set the default location, easy installation, no need to find ZERO.

Description

★Please totally read the following instruction first for proper use of encoder.

Parameter

Operating Voltage 10-30Vdc polarity protection
Current Consumption < 110mA (24V power supply) no load
Output Signal RS485 and 4-20mA dual independent output, you can set the length, angle, speed application output
Output load capacity ≤ 400 ohms, the standard 200-250 Ohm work
Linearity Resolution 1/4096
Operating Temperature -25—80℃ Programming temperature range:0℃~+70℃
Storage Temperature -40—80℃
Protection class IP67 for housing IP65 for shaft
Vibration & shock 20g,10~2000Hz;100g,6ms
Permissible Rotation Rate 2400rpm
Output refresh cycle <1.4ms
Connection Cable 1m 8-core shielded cable.
Overall Feature Clamping flange or synchronous flange, metal enclosure, sealed dual-bearing structure ( see attached drawing of overall dimension)
Shaft Clamping flange shaft diameter 10mm, length 20mm, with D-flat, stainless steel, synchro flange shaft 6mm, length 10mm
Signal Conditioning Can 4mA output trim, 20 mA output trim; direction can be set; preset position, external set, such as external zero

CAS38Connection

Cable Output
Cable Color Signal Output
Brown 10—30Vdc Operating Voltage
White 0V GND
Green RS485 Output A
Yellow RS485 Output B
Pink 4~20mA+
Blac 4~20mA-
Blue Programming permitted line
Gray External Reset line

Installation dimensions (Unit: mm)

Clamping & synchro flange

Schematic

Explanation: The horizontal axis represents the speed or the length (customizable), and the ordinate indicates the analog signal output

Custom RS485 communication protocol description:

Baud Rate: 4800bps 9600bps 19200bps 38400bps 115200bps.

Frame format: 8 data bits, 1 stop bit, no parity, no flow control.

The parameter of encoders is set by software instruction.

When the encoder is in active mode, That is the encoder automatically sends data to the host. Data length is 16 hexadecimal ASCII code format is: XAB> ± DATA ↙, as follow:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
X address > ± DATA

Wherein, “X” is the leading letters,”>” is delimiters, “±” is the sign bit; “DATA” is the data, ASCII format, 10, from 0 to 9 constitute the range of -9,999,999,999 ~ +9,999,999,999. “↙” is carriage return (0D).

When the encoder is in passive mode, That is quiz mode. Host send inquiry instruction to the encoder, the instruction is four hexadecimal ASCII code format is: D + AB ↙.

“AB” is encoder address, range is 0~99.

  1. Read data:

Host send: D + Address +0 D

Encoder return: X + address +> + sign + DATA+0 D

Example: Host sends 44 30 31 0D

Encoder return: 58 30 31 3E 2B 30 30 30 30 30 30 30 31 32 33 0D

  1. Read parameters: (When blue wire connected high, is available )

Host sends: D +00 + A +0 D

Encoder return: X + address + a + direction + baud rate+ working condition + working mode +0 D

Example: Host sends: 44 00 41 0D

Encoder return: 58 30 31 61 06 03 11 09 0D

(Encoder address 01, clockwise to increase data value,baud rate 19200, reciprocating mode, passive mode)

3. Set Address: (When blue wire connected high, is available)

Host sends: D + address + B + new address +0 D

Encoder return: X + address + b + new address +0 D

Example: Host sends: 44 30 30 42 30 31 0D

Encoder return: 58 30 30 62 30 31 0D

(Modify the encoder address 00 to 01)

4. Setting direction: (When blue wire connected high, is available)

Host sends: D + address + C + new direction +0 D

Encoder return: X + address + c + +0 D new direction

Example: Host sends: 44 30 31 43 07 0D

Encoder return: 58 30 31 63 07 0D

(The CW to CCW)

5. Set the baud rate: (When blue wire connected high, is available)

Host sends: D + address + E + new baud +0 D

Encoder return: X + address + e + new baud +0 D

Example: Host sends: 44 30 31 45 03 0D

Encoder return: 58 30 31 65 03 0D

(Baud rate to 19200)

6. Set each circle Resolution: (When blue wire connected high, is available)

Host sends: D + Address + F + Resolution +0 D

Encoder return: X + address + f + resolution +0 D

Example: Host sends: 44 30 31 46 30 30 33 36 30 30 0D

Encoder return: 58 30 31 66 30 30 33 36 30 30 0D

(Set the resolution to 3600)

7. Set Passive Mode: (When blue wire connected high, is available)

Host sends: D + address + I + mode +0 D

Encoder return: X + address + i + mode +0 D

Example: Host sends: 44 30 31 49 09 0D

Encoder return: 58 30 31 69 09 0D

(Set to quiz mode)

8. Set the presetting value: (When blue wire connected high, is available)

Host sends: D + address + J + preset value +0 D

Encoder return: X + address + j + preset value +0 D

Example: Host sends: 44 30 31 4A 30 30 30 30 30 30 30 30 30 30 0D

Encoder return: 58 30 31 6A 30 30 30 30 30 30 30 30 30 30 0D

(Set presetting value to 0)

9. Set 4mA corresponding values ​​: (When blue wire connected high, is available)

Host sends: D + address + G+ corresponding values ​​+0 D

Encoder return: X + address + g+ corresponding values ​​+0 D

Example: Host sends: 44 30 31 47 30 30 30 30 30 30 30 30 30 30 0D

Encoder return: 58 30 31 67 30 30 30 30 30 30 30 30 30 30 0D

(Set 4mA corresponding value to 0 )

10. Set 20mA corresponding values ​​: (When blue wire connected high, is available)

Host sends: D + address + H + corresponding value +0 D

Encoder return: X + address + h + +0 D corresponding values

Example: Host sends: 44 30 31 48 30 30 30 30 31 30 30 30 30 30 0D

Encoder return: 58 30 31 68 30 30 30 30 31 30 30 30 30 30 0D

(Set 20mA corresponding value 100000)

11. Set 20mA Fine-turning: (When blue wire connected high, is available)

Host sends: D + address + K + sign bit + trim value +0 D

Encoder return: X + address + K + sign bit + trim value +0 D

Example: Host sends: 44 30 31 4B 2B 30 30 30 30 30 30 0D

Encoder return: 58 30 31 6B 2B 30 30 30 33 36 30 0D

12. Set 4mA Fine-turning: (When blue wire connected high, is available)

Host sends: D + address + Q + sign bit + trim value +0 D

Encoder return: X + address + q + sign bit + trim value +0 D

Example: Host sends: 44 30 31 51 2B 30 30 30 30 30 30 0D

Encoder return: 58 30 31 71 2B 30 30 30 30 30 30 0D

13. Encoder reset instruction: (When blue wire connected high, is available)

Host sends: D + address + L + M + sum parity +0 D

Encoder return: X + address + l + m +sum parity +0 D

Example: Host sends: 44 30 31 4C 4D sum verify 0D

Encoder return: 58 30 31 6C 6D sum check 0D

(The current position is reset to the default preset values)

14. Setting the operating mode: (When blue wire connected high, is available)

Host sends: D + address + N + mode +0 D mode

Encoder return: X + address + n + +0 D mode

Example: Host sends: 44 30 31 4E 11 0D

Encoder return: 58 30 31 6E 11 0D

(Working mode set: 10 is loop mode, 11 is reciprocating mode.)

15. Set reciprocating max value: (When blue wire connected high, is available)

Host sends: D + address + O + H + max value +0 D

Encoder return: X + address + o + H + max value+0 D

Example: Host sends: 44 30 31 4F 48 30 30 30 30 31 30 30 30 30 30 0D

Encoder return: 58 30 31 6E 48 30 30 30 30 31 30 30 30 30 30 0D

(Set max value to 100000)

16. Sets the maximum value of the loop: (When blue wire connected high, is available)

Host sends: D + address + P + L + max value +0 D

Encoder return: X + address + p + L + max value +0 D

Example: Host sends: 44 30 31 50 4C 30 30 30 30 31 30 30 30 30 30 0D

Encoder return: 58 30 31 70 4C 30 30 30 30 31 30 30 30 30 30 0D

(Set max value to 100000)

Parameters table:

ASCII码 parameter ASCII code parameter
01 4800bps baud rate 07 CCW data increases
02 9600bps baud rate 08 Active mode
03 19200bps baud rate 09 passive mode
04 38400bps baud rate 10 Loop mode
05 115200bps baud rate 11 reciprocating mode
06 CW data increases

Programming permitted line (blue wire) usage:

When setting mode, the blue wire and the brown wire connected together to the positive power supply, the white wire connected to power ground. In this case, the encoder communication speed is fixed to 19200bps.

When non-setting mode, that is work mode, we recommend the blue wire and the white line connected together to the power ground.

RS485 communication considerations:

1. Communication speed and transmission distance is a contradiction. The higher the rate, the transmission distance is shorter, but more stable, and vice versa.

2. External reset line (gray wire) used to reset the encoder current position to presetting value. When using, the gray wire should connected to high level (24V). But after the completion of the operation, It’s better to connect gray wire to power ground to avoid interference.

3. In the strong external electromagnetic interference, RS485 connection is best to use double-shielded cable.

4. When multiple encoders connect host, because of the encoder have no parity, it is suggested that when the PC programming in time to distinguish between the various encoder data returned.

5. When the system has a motor, encoder power supply should be isolated from other.

Since RS485 circuit is a differential form, A, B are two signal lines with voltage, often times connect to ground or high level, RS485 circuit will cause damage

Shanghai QIYI Electrical & Mechanical Equipment Co., Ltd

 

Ended coupling overall dimension and technical parameter

Attached:Recommended coupling:

*Aluminium alloy integral style, with compact structure, durable, good rotation balance character.

*Good anti-torsion rigidity,little detunning of shaft, high precision.

* Absorb fine axial running, Eccentricity is allowed.

* Puller bolt fixed style and hug fixed style

Style F60022 F60067 Puller bolt fixed style

overall dimension:

F60022

S: M4

hug fixed style

overall dimension:

F60067

S: M4

D 24 24
A1 6,8,10 6,8,10
A2 8,10 10
L 24 32
A 7 8
Max. radial deviation ±0.3 ±0.35
Max. axial deviation ±0.5 ±0.5
Max. angle deviation ±4° ±4°
Max .speed rpm 8000 6000

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