DRV-28 inverter
s Extension cards
-290-
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 encoder card.
The AS28ENC0003 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.
AS28ENC0003 terminal function description
Label
Name
Function description
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
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-
