TECHTOP TD350 - Page 328

TD350 Series VFD Extension cards
-323-
Indicator No.
Definition
Function
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 encoder pulses are normal.
Blinks: An exception occurs in the communication between
the encoder and control board.
LED3
Power
indicator
On: The control board feeds power to the PG card.
EC-PG505-24 can work in combination with multiple types of incremental encoders through various
external wiring modes. It is user-friendly, adopting spring terminals.
EC-PG505-24 terminal function description
Label
Name
Function description
PWR
Encoder power
supply
Voltage: 24 V ± 5%
Max. output current: 150 Ma
PGND is also the ground of AO/BO/ZO. (AGND is
isolation power ground)
PGND
A1+
Encoder interface
1. Supporting 24 V push-pull interfaces
2. Supporting 24 V open collector interfaces
3. Frequency response: 200 kHz
A1-
B1+
B1-
Z1+
Z1-
A2+
Pulse reference
1. Supporting interfaces whose signal type is the
same as the encoder
2. Frequency response: 200 kHz
A2-
B2+
B2-
Z2+
Z2-
AO
Frequency-divided
output
1. Open-drain collector output
2. Supporting frequency division of 1–255, which
can be set through P20.16 or P24.16
BO
ZO