59
Handler Interface
14
O_S_OVER
Secondary parameter output
(NG)
Active low ,
AUX function is turned on
15
O_P_OVER
Primary parameter output
(NG)
Active low
19
O_P_HI
Main measuring output (over
higher limit)
Active low
20
O_P_LO
Main measuring output (over
lower limit)
Active low
21
O_NG
BUS output (NG)
Active low
22
O_INDEX
ADC in conversion
Active high
23
O_EOM
Measurement in conversion
Active high
Input Terminal
Table 8-2
Description of Handler Interface Input Signals
Pin
Name
Signal Description
24
I_E_TRIG
External input, valid rising edge
25
I_K_LOCK
Keyboard lock signal. Low level keyboard locked, high
level or floating unlocked.
Power Rating
Table 8-3
Description of Handler Interface Power Rating Signals
Pin
Name
Signal Description
16,18
GND
External power supply COM terminal
17
VCC
External power supply VCC input
8.2
How to Connection
Use external power supply (recommended)
Please connect the external power supply to the following pins at the same time:
VCC
：
Pin-17
GND
：
Pin-16
，
17
Electrical Characteristics
Power supply
：
+12.4V~36VDC
，
0.2A
（
minimum
）
Output signal
：
The collector output of the built-in pull-up resistor. Optocoupler isolation.
Input signal
：
Optocoupler isolation.
Note: To avoid damage to the interface, do not exceed the power supply voltage
requirements.
To avoid damage to the interface, wire the instrument after it has been turned off.
If the output signal is used by users to control the relay, the output optocoupler can only
push the small signal relay. The relay must use the reverse energy release diode. If you need
to push the high power relay, please increase the triode to push.
Input terminal schematic
Figure 8-2
Typical Circuit Diagram of Handler Interface Input signals
（
Trig
）