Tonghui TH2840 Series - Electrical Feature

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Table 10-14 Signal assignment table of transformer scan pin (Trans Controller):
Pin
Signal
Signal direction
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
NS 10
NS11
NS12
NS13
NS14
NS15
NS16
NS17
NS18
NS19
NS20
NS21
NS22
NS23
NS24
NS25
NS26
NS27
NS28
NS29
NS30
Output
Sorting signal line:
All NS outputs are collector outputs and
have different definitions in different sorting
modes.
22
23
+5V
Output
The internal power +5V: to use the internal
power is not recommended. If you use the
internal power, please ensure that the current
is lower than 0.3A and the signal line is far
from the disturbance source.
24
25
GND
Output
10.4.2 Electrical Feature
10.4.2.1 DC Isolation Output Signal
Each DC output (pins 1-10, 24, 25 of Trans Handler and pins 1-21 of Trans Controller) are isolated
by optocoupler and output from the collector after ULN2003 drive enhancement. The output voltage
of each line is related to the power supply voltage used. The high level of the internal power supply
is 5V, and the high level of the external power supply is the external power supply voltage. Connect
with internal supply voltage (+5V) or with external supply voltage (EXTV: +5V-24V) by jumper.
The DC isolated output signal utilizes a dedicated electrical system which is independent of the
control output signal. Therefore, a common line for a separate circuit on the processor board: