◼Independent high-precision sampling of each channel；

◼Has a variety of alarm logic judgment modes；

◼Wide operating voltage, compatible with DC12-28V power

supply；

◼Sufficient threading spacing is reserved between the transformers

to facilitate wiring maintenance；

◼High-stability design, long-term operation without manual

intervention；

Overview

CTI series current monitoring module is a multi-channel AC

current real-time monitoring and acquisition module. By

collecting the signal waveform of a high-precision current

transformer, the built-in 32-bit high-performance main control

unit calculates the effective current value in real time, and can

realize a variety of alarm logic according to user settings.Using

RS-485 communication bus, data transmission is carried out

through the standard MODBUS-RTU protocol.

Technical parameters

Dimensions

Terminal definition

Terminal 1: the positive electrode of the module’s power supply

Terminal 2: Negative electrode of module power supply

Terminal 3: RS485+

Terminal 4: RS485-

Terminal 5: Input signal INA

Terminal 6: Input signal INB

Terminal 7: Normally closed terminal of relay

Terminal 8: Common terminal of relay

Terminal 9: Relay normally open

Dial code setting

The 8th bit of the dial code of the current monitoring module is used to select the communication parameters.

When the 8th dial code is set to ON, the communication baud rate is 9600, and 8N1 has no verification.At this time, the communication

address is determined by dialing code 1-dialing code 7. We regard dialing code ON as a value of 1 and dialing code OFF as a value of 0.:

Mailing address = Dial code 1+ (dial code 2×2) + (dial code 3×4) + (dial code 4×8) + (dial code 5×16) + (dial code 6×32) + (dial code

7×64)

If the 8th bit dial code is set to OFF, the communication address, baud rate, parity bit and other parameters are determined by the

registers 202, 203, and 204 (see register definition for details)

Note: After adjusting the communication parameters, the module needs to be restarted to take effect!

Indicator light description

There are three indicators on the right side of the module to identify the working status.

RUN: Running state, long light indicates that the alarm is allowed, and the alarm judgment is prohibited when the short flicker is on；

COM: Communication status, flashing during communication；

ALARM: Alarm status, there is an alarm for a long time to light up；