TECHTOP TD350 - Page 325

TD350 Series VFD Extension cards
-320-
Indicator definition
Indicator No.
Definition
Function
LED1
State indicator
On: The extension card is establishing a connection
with the control board.
Blinks periodically: 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).
Off: The extension card is disconnected from the control
board.
LED2
Disconnection
indicator
Off: A1 and B1 of the encoder are disconnected.
On: The pulses are normal.
LED3
Power indicator
On: 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
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-