CHESTER-X0
This article describes the CHESTER-X0 extension module. Two variant of the CHESTER-X0 module are available: CHESTER-X0A (including 5.0V boost converter) and CHESTER-X0B (without 5.0V boost converter).
Module Drawing
Module Overview
CHESTER-X0B provides 4 independent GPIO channels, CHESTER-X0A includes also 5V boost converter. Each channel can be used for these applications:
- Digital input and output
- Analog input and output
- Voltage input 0-10 V
- Current loop 4-20 mA
- Dry contact input
- NPN and PNP input
Depending on the application these configuration options are available for each channel:
- Enable pull-up resistor 330 kΩ (PUX)
- Enable pull-down resistor 249 Ω (CLX)
- Enable voltage divider 1:10 100 kΩ x 10 kΩ (PDX)
- Enable 5V boost converter (CHESTER-X0A only) (ONX)
Channel Block Diagram
This picture show the electric circuit of each channel:
Configuration Table
The configuration depends on the applicatioon:
Application: | PUx | CLx | PDx |
---|---|---|---|
Analog input 0-10V | ❌ | ✅ | ❌ |
Analog output 0-VDD | ❌ | ❌ | ❌ |
Digital input | ❌ | ? | ❌ |
Digital output | ❌ | ❌ | ❌ |
Current loop 4-20 mA | ❌ | ✅ | ✅ |
Dry contact | ✅ | ❌ | ❌ |
NPN input | ✅ | ❌ | ❌ |
PNP input | ❌ | ❌ | ✅ |
CHESTER Pin Configuration Diagram
Pin Configuration and Functions
Position | Signal Name | Signal Description |
---|---|---|
1 | VDD | System VDD rail 3.0 V |
2 | CH1 | Channel 1 |
3 | GND | System ground signal |
4 | CH2 | Channel 2 |
5 | CH3 | Channel 3 |
6 | GND | System ground signal |
7 | CH4 | Channel 4 |
8 | +V | System positive rail (*) |
*Note: The system positive rail voltage depends on CHESTER power supply option.