KTC838A
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Product Introduction
KTC838A is a high-precision full-digital automatic tension controller. It can build a closed-loop system with tension detectors, or run automatic calculation-based open-loop control through proximity switch/encoder inputs, combining the capabilities of KTC818A and KTC828A. It outputs 0-24VDC for magnetic powder clutch/brake and 0-10V for inverter, servo motor, or other actuators, suitable for printing, packaging, paper, cable, rubber-plastic, battery and textile lines.
Key Features
- 128x96 graphic LCD with Chinese/English display
- Fully digital design, simple calibration, accurate and stable measurement
- Supports single/dual sensor input: differential 200mV (5V), strain-gauge 20mV (10V), dancer potentiometer mode
- Supports taper tension control with thickness accumulation and ratio-based roll diameter calculation
- No-overshoot PID algorithm for stable start/stop tension
- Dual-shaft switching and acceleration/deceleration control
- Bumpless Auto/Manual switching and password protection
- Optional RS485 Modbus communication with PLC/PC systems
- Wide-range power input: 165-264VAC for long-term reliable operation
Technical Parameters
Model
KTC838A
Control Mode
Closed-loop + automatic calculation open-loop
Sensor Inputs
Single/Dual channel tension sensor input
Differential Sensor Spec
Input 200mV, supply 5VDC
Strain Gauge Sensor Spec
Input 20mV, supply 10VDC
Switch Inputs
3 channels
Analog Inputs
2 channels, 0-10V
Digital Input
NPN proximity switch / encoder, max 15KHz
Measurement Accuracy
±0.2%FS ±1 digit, sampling period 100ms
Control Algorithm
PI (Proportional-Integral)
Main Output
2 channels, 24V/4A, direct drive for magnetic powder clutch/brake
Auxiliary Output
2 channels, 0-10V (or 4-20mA), for inverter/servo/I-P actuator
Alarm Output
Normally-open relay
Communication
RS485, standard Modbus
Dimensions
246(W) x 154(H) x 156.5(D) mm
Power Supply
165-264VAC, 50/60Hz
Installation Drawing
Note: All dimensions in this section are in mm.
Wiring Diagram
