GD350A series high-performance multifunction VFD
-29-
Terminal
name
Description
Whether the input is voltage or current is set through P05.50;
Resolution ratio: When 10V corresponds to 50Hz, the min. resolution ratio is
5mV;
Deviation: ±0.5% at 25°C, when input is above 5V/10mA.
GND
+10.5V reference zero potential
AO1
Output range: 0–10V or 0–20mA
Whether the output is voltage or current is set through the switch SW2
Deviation: ±0.5% at 25°C, when input is above 5V/10mA.
RO1A
RO1 relay output; RO1A is NO, RO1B is NC, RO1C is common terminal
Contact capacity: 3A/AC250V, 1A/DC30V
RO1B
RO1C
RO2A
RO2 relay output; RO2A is NO, RO2B is NC, RO2C is common terminal
Contact capacity: 3A/AC250V, 1A/DC30V
RO2B
RO2C
HDO
Switch capacity: 50mA/30V
Range of output frequency: 0–50kHz
Duty ratio: 50%
COM
Common terminal of +24V
CME
Common terminal of open collector output; short connected to COM by default
Y1
Switch capacity: 50mA/30V
Range of output frequency: 0–1kHz
485+
RS485 communication port, RS485 differential signal port and standard RS485
communication port must use twisted shielded pair; the 120ohm terminal matching
resistor of RS485 communication is connected by the switch SW3.
485-
PE
Grounding terminal
PW
Used to provide input digital working power from the external to the internal.
Voltage range: 12–30V
24V
User power provided by the VFD, maximum output current 200mA.
COM
Common terminal of +24V
S1
Digital input 1
Internal
impedance: 3.3kΩ
Accept 12–30V voltage input
Bi-directional input terminal, supporting NPN/PNP connection
modes
Max. input frequency: 1kHz
All are programmable digital input terminals, the functions of
which be set through function codes
S2
Digital input 2
S3
Digital input 3
S4
Digital input 4
HDIA
Besides S1–S4 functions, the terminals can also act as high frequency pulse
input channels
Max. input frequency: 50kHz;
Duty ratio: 30%–70%;
Supporting 24V-power quadrature encoder input; equipped with speed-
HDIB