Tonghui TH2840 Series - Handler Wiring Operation Instructions for Transformer Single Measurement; Using Operation

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Table 10-10 the electrical feature of the DC isolation output
10.3.3.2 DC Isolation Input Signal
DC isolation input signals include the /EXT_TRIG and /KEY_LOCK signals.
The /EXT_TRIG signal (pin 12 and pin 13) is input to the LED cathode side of the optocoupler. The
instrument is triggered when the signal increases from LOW to HIGH. The optocoupler LED (anode
side) can be driven by an internal pull-up voltage (+5 V) or an external voltage (EXT.DCV2).
The /KEY_LOCK signal (pin 25) is input to the optocoupler LED (on the cathode side). As long as
this is low level, the keys on the front panel of the instrument will all be locked. The optocoupler
LED (anode side) can be driven by internal voltage (+5V) or external voltage (EXT.DCV2).
The input circuit configuration of the DC isolation input signal is shown in Figure 10-6.
10.3.4 Handler wiring operation instructions for transformer single
measurement
The wiring operation of the HANDLER for single measurement of the transformer is exactly the
same as the wiring method of the bin sorting with the same pin number. The wiring diagram of the
common anode PLC is shown in Figure 10-7, and the wiring diagram of the common cathode PLC
is shown in Figure 10-8.
10.3.5 Using Operation
After the HANDLER interface is correctly connected to the PLC, the deviation mode can be
selected in the deviation column on the single group setting page. Deviation mode: Δ, Δ%. The
lower limit of each parameter can be set in the column corresponding to the lower limit, and the
upper limit of each parameter can be set in the column corresponding to the upper limit. The first
parameter of the single group setting page corresponds to /FAIL1, the second parameter corresponds
to /FAIL2, and so on, the twelfth parameter corresponds to /FAIL12. You can select ON in the
comparison item on the single group setting page.
The output signal
The output rated
voltage
The maximum
current
The reference ground for the
circuit
LOW
HIGH
Compared
signal
/FAIL1 - /FAIL12
/PASS
/FAIL
≤0.5V
+5V--+24V
6mA
Internal pull-up voltage:
TH2840 GND
EXTV1：
COM1
Control signal
/INDEX
/EOM
/ALARM
≤0.5V
+5V--+24V
5mA
Internal pull-up voltage :
TH2840 GND
EXTV2：
COM2