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ENCODER RECEIVER OPTION (Feedback Card) HA388867 Issue 4 Technical Manual 

Description 

The Encoder Receiver Option allows incremental encoders to be connected directly to the motor controller to provide highly accurate speed feedback measurement. It mounts directly to the Main Control Board by means of three support stand-offs and a 10-pin interface connector built in to the board. A convenient board-mounted plug-in terminal block is provided for field connections. 

590P-Encoder-Board-Manual HA388867 issue 4.pdf

Advantages 
The Encoder Receiver Option board offers the following advantages: 
•  Contains two optically isolated differential inputs for channels A and B 
•  Decoding logic to interface the encoder to the control board 
•  Supplies fixed or customer-adjustable voltage, isolated encoder power supply 
Used On 
This option can be used on: 
•  590 and 590P Series DC Controllers 

Available Options 
The Encoder Receiver is available in the following options: 

AH387775U001  Encoder Receiver Customer Calibrated 
AH387775U005  5V Encoder Receiver Option PCB 
AH387775U012  12V Encoder Receiver Option PCB 
AH387775U015  15V Encoder Receiver Option PCB 
AH387775U024  24V Encoder Receiver Option PCB 

Note:  An adjustment potentiometer sets the supply voltage and may be calibrated for various voltages. Refer to the Application Notes, page 6. When used with Parker SSD Drives Encoder, AH387775U015 must be used. 

Specifications 
Maximum Input Frequency  100kHz per channel 
Receiver Input Current  < 10mA per channel 
Input Format  Two differential channels in quadrature 
Minimum Differential Input Voltage  2.5V 
Maximum Differential Input Voltage  30V 
Encoder Supply Capacity  2W maximum 
Terminal Wire Size (maximum)  16 AWG 
Terminal Tightening Torque  Minimum 0.22Nm (1.9 pound-inches) 
Recommended 0.4Nm (3.5 pound-inches) 

590 Installation 
1.  Unwrap and handle the option board using correct static safety procedures. 
2.  Lift the lower cover of the controller door into the open and locked position. 
3. Align the 10-pin connector on the option board with the controller pins on the left of the controller door board. 
4.  Carefully push the option board on to the pins. All three white support stand-offs should engage the controller door board. 
5.  Refer to the motor controller Product Manual for software selection and scaling of the feedback option

 Encoder Receiver Option 590 Mounting 

590P Installation 
1.  Unwrap and handle the option board using correct static safety procedures. 
2.  Loosen the two screws that retain the terminal cover, and remove the cover. 
3.  Align the 10-pin connector on the option board with the controller pins in the left-hand option bay of the controller housing. 
4.  Carefully push the option board onto the pins. All three white support pins should engage the controller housing. 
5.  Refer to the motor controller Product Manual for software selection and scaling of the feedback option. 

Adjusting the Customer Calibrated Option AH387775U001 
The Encoder Receiver Option can be ordered for standard supply voltages of 5, 12, 15 and 24V dc. For applications requiring different voltages, the Customer Calibrated option (AH387775U001) can be purchased and the following procedure used to adjust the output voltage setting. 
1.  Install the Encoder Receiver Option card on the drive. Do NOT connect it to the encoder yet. 
2.  Power-up the drive. 
3.  Measure the voltage between terminals E1 and E2. This voltage can range from 5V to 30V dc. 
4.  Adjust the adjustment potentiometer until the desired output voltage is reached. Turning the adjustment potentiometer clockwise increases the output voltage. 
5.  Connect the encoder and re-check the voltage at the encoder terminals. 
Note:  If the voltage drops by more than one volt, check the encoder wiring for excessive loading. Adjusting the adjustment potentiometer to compensate for an excessive line voltage drop is not recommended. 
Figure 2 shows the terminal designations and the location of the adjustment potentiometer. In cases where the encoder receiver card or the motor controller cannot supply enough power for the encoder, use an external power supply. The supply should be isolated from ground, that is neither the 0V dc nor the +V dc should be connected to ground. 
All wiring to the Encoder Receiver Option board should be in screened cable. Cable with an overall screen or a screen over each individual pair may be used. Connection to earth should be made at the receiver end ONLY if possible, and should be in a star configuration. Take special care wiring the encoders to the option board due to the low level of the signals. 

Encoders with Complementary Outputs

Single-Ended Encoders 
Note that differential encoders are recommended due to their better noise immunity. 
When using single-ended encoders: 
1.  Connect the A and B channels to terminals to E3 and E5 as shown above. 
2.  Connect terminals E4 (A complement) and E6 (B complement) to E1 (0V dc) 
 
Recommended cable (3 pairs individually screened): 
Belden equivalent 8777 
Parker SSD Drives Part Number CM052666 

Parker SSD Drives Encoder Connection 

Function                             MS Connector Pin           Receiver Terminal 
Channel A                           A                                      3 
Channel A  Complement    G                                      4 
Channel B                          B                                       5 
Channel B Complement     H                                      6 
Marker                                C   
Marker Complement           I   
Vcc Supply                         D                                       2 
Vcc Sensor (not used)        E   
0V                                      F                                       1 
0V Sensor (not used) -   
Cable Screen     

Recommended Encoder  Litton: Parker SSD Drives Part Number: 
G71SCLDBI1000-531-15EA DD385536U010 (1000 line)
Alternative Encoders  Heidenhain: Avtron: ROD 534.1013  M945 1 R 1000 B C 15 

Parker SSD Drives Recommended Encoder Specification 
Mechanical Specification 

Dimensions  Figure 2 : Outline Drawing of Encoder with 
Adaptor Flange 
Weight  Approximately 650g 
Starting Torque (25°C)  0.007Nm maximum 
Slewing Speed (maximum)  6000 rpm 
Shaft Loading - Axial  110N 
Shaft Loading - Radial  130N 
Rotor Inertia  3.6 x 106 Nm/s2
 
 Environmental Characteristics

Operating Temperature  0°C to +70° 
Storage Temperature  -25°C to +80°C 
Humidity  up to 98% RH 
Protection  IP64 
Shock  20G, for 11ms duration 
Vibration  10G, 5-2000Hz 

Materials Used 

Mainframe  Aluminium 
Housing  Cast Aluminium 
Shaft  Anti-magnetic stainless steel 
Bearing  ABEC5 
Light Source  GaA1 As Infrared light emitting diode 

Electrical Specification 

Supply Voltage  8 - 15V dc 
Current Consumption  180mA maximum 
Frequency Range  300kHz 
Lines per Rev  1000, see Note 
Output Format  15V differential with 90° Q
Maximum Load per Output Channel  50mA 
Maximum Period Distortion  45° 
Maximum Quadrature Distortion  45° 
Maximum Rise/Fall Time at 10V  150ns 

Note:  Litton Encoders are available in other accuracies such as 500 lines/rev or 2000 lines/rev to suit the application. 

Electrical Connection 
Electrical connections are made to the encoder via a 10-way MS radial connector. Plug and socket provided.