A.7.1 UVW incremental PG card––EC-PG503-05

The terminals are arranged as follows:
A2+ | A2- | B2+ | B2- | Z2+ | Z2- | |||||
PE | AO+ | BO+ | ZO+ | A1+ | B1+ | Z1+ | U+ | V+ | W+ | PWR |
GND | AO- | BO- | ZO- | A1- | B1- | Z1- | U- | V- | W- | PGND |
Indicator definition
Indicator No. | Definition | Function |
LED1 | Disconnection indicator | This indicator is off when A1 and B1 of the encoder are disconnected; and it is on when the pulses are normal. |
LED2 | State indicator | This indicator is on when the extension card is establishing a connection with the control board; it blinks periodically after the extension card is properly connected to the control board (the period is 1s, on for 0.5s, and off for the other 0.5s); and it is off when the extension card is disconnected from the control board. |
LED3 | Power indicator | This indicator is on after the control board feeds power to the PG card. |
The EC-PG503-05 extension card supports the input of absolute position signals and integrates the advantages of absolute and incremental encoders. It is user-friendly, adopting spring terminals.
EC-PG503-05 terminal function description
Label | Name | Function description |
PE | Grounding terminal | It is connected to the ground for enhancing the anti-interference performance |
GND | Ground | PCB internal power ground |
PWR | Encoder power | Voltage: 5 V±5% Max. current: 200 mA (PGND is isolation power ground) |
PGND | ||
A1+ | Encoder interface | 1. Differential incremental PG interface of 5 V 2. Response frequency: 400 kHz |
A1- | ||
B1+ | ||
B1- | ||
Z1+ | ||
Z1- | ||
A2+ | Pulse setting | 1. Differential input of 5 V 2. Response frequency: 200 kHz |
A2- | ||
B2+ | ||
B2- | ||
Z2+ | ||
Z2- | ||
AO+ | Frequency-divided output | 1. Differential output of 5 V 2. Supporting frequency division of 1–255, which can be set through P20.16 or P24.16 |
AO- | ||
BO+ | ||
BO- | ||
ZO+ | ||
ZO- | ||
U+ | UVW encoder interface | 1. Absolute position (UVW information) of the hybrid encoder, differential input of 5 V 2. Response frequency: 40 kHz |
U- | ||
V+ | ||
V- | ||
W+ | ||
W- |
The following figure shows the external wiring of the EC-PG503-05 extension card.

A.7.2 Resolver PG card––EC-PG504-00

PE | AO+ | BO+ | ZO+ | EX+ | SI+ | CO+ | A2+ | B2+ | Z2+ | PWR |
GND | AO- | BO- | ZO- | EX- | SI- | CO- | A2- | B2- | Z2- | GND |
Indicator definition
Indicator No. | Definition | Function |
LED1 | State indicator | This indicator is on when the extension card is establishing a connection with the control board; it blinks periodically after the extension card is properly connected to the control board (the period is 1s, on for 0.5s, and off for the other 0.5s); and it is off when the extension card is disconnected from the control board. |
LED2 | Disconnection indicator | This indicator is off when the encoder is disconnected; it is on when the encoder signals are normal; and it blinks when the encoder signals are not stable. |
LED3 | Power indicator | This indicator is on after the control board feeds power to the PG card. |
The EC-PG504-00 extension card can be used in combination with a resolver of excitation voltage 7 Vrms. It is user-friendly, adopting spring terminals.
EC-PG504-00 terminal function description
Label | Name | Function description |
PE | Grounding terminal | It is connected to the ground for enhancing the anti-interference performance |
PWR | Output power supply | Voltage 5V±5% |
GND | ||
SI+ | Encoder signal input | Recommended resolver transformation ratio: 0.5 |
SI- | ||
CO+ | ||
CO- | ||
EX+ | Encoder excitation signal | 1. Factory setting of excitation: 10 kHz 2. Supporting resolvers with an excitation voltage of 7 Vrms |
EX- | ||
A2+ | Pulse setting | 1. Differential input of 5 V 2. Response frequency: 200 kHz |
A2- | ||
B2+ | ||
B2- | ||
Z2+ | ||
Z2- | ||
AO+ | Frequency-divided output | 1. Differential output of 5 V 2. Frequency-divided output of resolver simulated A1, B1, and Z1, which is equal to an incremental PG card of 1024 pps. 3. Supporting frequency division of 1–255, which can be set through P20.16 or P24.16 4. Max. output frequency: 200 kHz |
AO- | ||
BO+ | ||
BO- | ||
ZO+ | ||
ZO- |
The following figure shows the external wiring of the EC-PG504-00 extension card.

A.7.3 Multi-function incremental PG card––EC-PG505-12

The terminals are arranged as follows:
The dual in-line package (DIP) switch SW1 is used to set the voltage class (5 V or 12 V) of the power supply of the encoder. The DIP switch can be operated with an auxiliary tool.
PE | AO+ | BO+ | ZO+ | A1+ | B1+ | Z1+ | A2+ | B2+ | Z2+ | PWR |
GND | AO- | BO- | ZO- | A1- | B1- | Z1- | A2- | B2- | Z2- | PGND |
Indicator definition
Indicator No. | Definition | Function |
LED1 | State indicator | This indicator is on when the extension card is establishing a connection with the control board; it blinks periodically after the extension card is properly connected to the control board (the period is 1s, on for 0.5s, and off for the other 0.5s); and it is off when the extension card is disconnected from the control board. |
LED2 | Disconnection indicator | This indicator is off when A1 and B1 of the encoder is disconnected; and it is on when the pulses are normal. |
LED3 | Power indicator | This indicator is on after the control board feeds power to the PG card. |
The EC-PG505-12 extension card can be used in combination with multiple types of incremental encoders through different modes of wiring. It is user-friendly, adopting spring terminals.
EC-PG505-12 terminal function description
Label | Name | Function description |
PE | Grounding terminal | It is connected to the ground for enhancing the anti-interference performance |
GND | Ground | PCB internal power ground |
PWR | Encoder power | Voltage: 5 V/12 V ±5% Max. output: 150 mA Select the voltage class through the DIP switch SW1 based on the voltage class of the used encoder. (PGND is isolation power ground) |
PGND | ||
A1+ | Encoder interface | 1. Supporting push-pull interfaces of 5 V/12 V 2. Supporting open collector interfaces of 5 V/12 V 3. Supporting differential interfaces of 5 V 4. Response frequency: 200 kHz |
A1- | ||
B1+ | ||
B1- | ||
Z1+ | ||
Z1- | ||
A2+ | Pulse setting | 1. Supporting the same signal types as the encoder signal types 2. Response frequency: 200 kHz |
A2- | ||
B2+ | ||
B2- | ||
Z2+ | ||
Z2- | ||
AO+ | Frequency-divided output | 1. Differential output of 5 V 2. Supporting frequency division of 1–255, which can be set through P20.16 or P24.16 |
AO- | ||
BO+ | ||
BO- | ||
ZO+ | ||
ZO- |
The following figure shows the external wiring of the extension card used in combination with an open collector encoder. A pull-up resistor is configured inside the PG card.

The following figure shows the external wiring of the extension card used in combination with a push-pull encoder.

The following figure shows the external wiring of the extension card used in combination with a differential encoder.
