Analog Input Module (Nr4412/Nr4422) - NR Electric PCS-9611 Instruction Manual

6 Hardware
05 RTS
06 TXD
07 SGND

6.6 Analog Input Module (NR4412/NR4422)

The analog input module can transform high AC input values to relevant low AC output value,
which are suited to the analog inputs of the main CPU module. The transformers are used both to
step-down the currents and voltages to levels appropriate to the relay's electronic circuitry and to
provide effective isolation between the relay and the power system. A low pass filter circuit is
connected to each transformer (CT or VT) secondary circuit for reducing the noise of each analog
AC input signal.
There are three types of analog input modules: NR4412-9I5U, NR4412-6I5U and NR4422-4I4U.
The view of the analog input module is shown in Figure 6.6-1.
NOTE! The rated value of the current transformer is optional: 1A or 5A. The rated value
of the CT must be definitely declared in the technical scheme and the contract.
NOTE! Because the rated value of the current transformer is optional, it is necessary to
check whether the rated value of the current transformer inputs is according to the
demand of the engineering scheme before the device is put into operation.
DANGER! Never allow the current transformer (CT) secondary circuit connected to this
relay to be opened while the primary system is energized. The opened CT secondary
circuit will produce a dangerously high voltage. If this safety precaution is disregarded,
personal death, severe personal injury or considerable equipment damage will occur.
6-8
The interface for connecting with a printer, the EPSON
recommended.
NR4412 NR4412
01 02 01
03 04 03
05 06 05
07 08 07
09 10 09
11 12 11
13 14 13
15 16 15
17 18 17
19 20 19
21 22 21
23 24 23
25 26
9I5U
Figure 6.6-1 View of the analog input module
Date: 2014-04-08
NR4422
02 01 02
04 03 04
06 05 06
08 07 08
10 09 10
12 11 12
14 13 14
16 15 16
18 17 18
20 19 20
22 21 22
24 23 24
6I5U 4I4U
®
LQ-300K printer is
PCS-9611 Feeder Relay