- 10-bit, Analog-to-Digital Converter
- 10-bit, Digital-to-Analog Converter
- Power Supply – 100 ~ 240 VAC
- Surface Mount Device(SMD)
Description
The Open Control System Controller is a fully programmable controller that is intended for Building Control System; Environment Control System and HVAC Control Systems. The Controller being fully programmable will ensure control & monitoring application versatility, allowing specific application to be created according to each facility or application requirement.
The controller is a fully configurable controller based on the PIC series micro-controller with an on-board clock and one RS-485 communications Bus. The two digital outputs 240VAC relays (7 Amps) are ideal for driving contractors and starters directly. The two analog outputs (0 – 10 VDC or 4 – 20 mA) are used for modulating actuators or dampers or electronic-pneumatic actuators or variable speed drives and other analog actuators. The three digital inputs are be used for pulse counting and reading contact closures directly. The two analog inputs are be used for reading the PT 1000 temperature sensor, 4 to 20mA and 0 to 10VDC input signals.
- Support PT 1000 temperature sensor
- Analog Input Monitoring
- Digital Input Monitoring
- Maintained / Pulse Digital Output Control
- Analog Output Modulating Control
- Optional Demand Limiting Control
- Logic Based Control
- Alarm Monitoring
- Trend Logging
The fact that the controller is fully programmable ensures complete control and monitoring application flexibility. The same standard controller hardware can be used for control and monitoring of the following applications:
- HVAC, BAS & EMS Systems.
- Chiller, Heat Pump units and Rooftop units.
- Other types of programs can be developed according to customers’ specifications.
Technical Specifications
| Supply Voltage/Power Consumption: | 100 ~ 240 VAC / 5VA |
|---|---|
| Protection: | 1A Fuse |
| Analog Inputs: | 2 x PT 1000 or 2 x 4 to 20mA or 2 x 0 to 10VDC. Accuracy: 0.1% full scale or 6 x for reading contact closures directly |
| Digital Inputs: | 3 x for reading contact closures directly complete with surge protection (Photocoupler Type) |
| Analog Outputs: | 2 x 0-10VDC or 2 x 0 to 20mA. Resolution: 0.1% full scale |
| Digital Outputs: | 2 x Relay Dry Contacts with contact rating of 240VAC maximum 7Amps (2 Relay Outputs have Normally Open & Normally Close Contact). |
| Microprocessor: | PIC Micro-Controller (128 KB SRAM & 256 KB FLASH) |
| Communications: | 1 x RS-485 Bus (One System Bus & One Controller Bus). Baud Rate: 9600~76.8Kbps. Maximum Length: 4000 ft (1.2km) |
| Display Type: | LCD Display |
| Mounting Type: | Panel Mount |
| Weight: | 400g |
| Ambient limits: | |
| a) Storage: | -10 to 90 ºC; less then 90% rh, non-condensing |
| b) Operating: | 0 to 70 ºC; 10 to 90% rh, non-condensing |
Controller Physical Dimension
Size: 100mm (W) x 70mm (H) x 86mm (D)
All connections to the Open Control System Controller are via screw terminals for easy installation and servicing. The screw terminals accept wire sizes from 0.5 to 1.5 mm sq. section area cable.
