Electrical Design
‑70‑
Terminal
Mark
Terminal
Type
Sub‑
termi
nal
Mark
Function
Specification
CN9
Analog
input
terminal
AI1‑
GND
Analog single‑
ended input
channel AI1
0 V to 10 V or 0 mA to 20 mA; 12‑bit
resolution; correction accuracy: ±0.5%;
input impedance in voltage input mode:
22.1 kΩ; input impedance in current
input mode: 500 Ω or 250 Ω
AI1 supports input from the temperature
sensor, including the PT100, PT1000,
KTY84, and PTC.
AI2‑
GND
Analog single‑
ended input
channel AI2
0 V to 10 V or 0 mA to 20 mA; 12‑bit
resolution; correction accuracy: ±0.5%;
input impedance in voltage input mode:
22.1 kΩ; input impedance in current
input mode: 500 Ω or 250 Ω
Analog
output
terminal
AO1‑
GND
Analog single‑
ended output
channel AO1
0 V to 10 V (default mode) or 0 mA to 20
mA; 12‑bit resolution; correction
accuracy: ±1%; maximum load output
current in voltage mode: 2 mA; load
impedance in voltage mode: > 5 kΩ;
load impedance in current mode: < 500
Ω
AO2‑
GND
Analog single‑
ended output
channel AO2
On‑
board
power
supply
output
terminal
+10V‑
GND
10 V analog
voltage output
10 V ± 10%; maximum current: 10 mA;
GND is isolated from COM and CME
internally.
+24V‑
COM
On‑board 24 V
to power
external
devices
24 V ± 10%; no‑load voltage: ≤ 30 V;
maximum output current: 200 mA;
internally isolated from OP/CME/GND
CN1
Terminal
for input
of
external
24 V
power
supply
24V‑0V
Terminal for
input of
external 24 V
power supply
Terminal for input of external 24 V
power supply; maximum input voltage:
30 V; used by the control board;
minimum input current: 1 A; 0V is
isolated from COM, CME, and GND
internally.
CN2 STO
terminal
STO1
STO channel 1 Internal connection: STO1 and STO2 are
connected to +24VS using the jumper
bar by default. External connection:
STO1, STO2, and +24VS can be
connected to the external 24 V power
supply. For wiring details, see the STO
function.
STO2
STO channel 2
+24VS
Power supply+
for STO
channels 1 and
2
COM
Power supply
ground for STO
channels 1 and
2
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