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E.C. Products Limited - Head Office EC House, Amberley Way, Hounslow Middlesex, TW4 6BH, United Kingdom Tel: +44 (0)20 8569 4100 Fax: +44 (0)20 8569 4111 ECP reserves the right to change the information contained in this datasheet as and when required without notice. Users must take care to use the information contained in this leaflet. ECP will not accept the liability for damages, loss and expenses that may be caused by omissions and errors in the information provided. Ref: ds_PI_0808 Ver1.0 Proportional Temperature Controller CAD-PI Page 1 of 3 Description The CAD-PI is a DIN rail mountable single (optionally up to 3) channel electronic proportional temperature controller. The unit monitors air or liquid temperatures and controls from one to three proportional analogue channels. Features One proportional channel, two extra optional ● Night setback input ● Heating, cooling or both function ● Digital LED display with temperature ● Technical Specification Input Supply: 24Vac/dc ±15% 75mA max. Sensor Type: Any 10KΩ Type T sensor from our range Temp. Range: -5°C to +95°C Span: 1-20°C Output Signal: 1 x 0...10V proportional 2 x 0..10V optional Mounting: DIN rail carrier 114 x 82 x 60 mm Terminals: Rising clamp suitable for 0.5-2.5mm² Ambient: -20°C to +50°C Order Codes CAD-PI 1 channel temperature controller CAD-XM1 1 channel expansion module CAD-POT Remote setpoint adjuster Notes Min Sensor Cable 7/0.2mm. Keep away from Power Cables or ● sources of interference. Screened cable is recommended to eliminate electrical ● interference. Terminals 0.5-2.5mm2 with wire clamps. Max cable length ● 100m. This module is designed for LOW VOLTAGE isolated ● supply connection. If connecting to DC supply, negative supply to 0v, positive ● supply to 24v. Ambient Temp -20ºC /+50ºC dry bulb. ● Wiring 24V AC/DC supply– If DC is used, then connect the negative rail to 0V and positive to 24V Terminal. LO LIMIT- If used, connect low-limit temperature sensor to these two terminals. Sensor type is CAD... Main Sense– Connect the main temperature sensor to these two terminals only. Sensor type is CAD... Night Switch– This must be a volt free contact. Connect between centre and outer terminal as marked. When open, the DIGISTAT uses DAY setpoint. When closed, the NIGHT setpoint is used. Data Out– This is a digital data stream compatible with the SamTalk protocol. Connect remote displays or other protocol compatible devices to this port +/-4°C POT– Connect the POT between the centre and outer terminal. If fitted, allows +/-4°C adjustment away from the DAY setpoint. This allows the range of the DIGISTAT to be extended from -9°C to +99°C. EXTL (External) POT– Connect the POT between the centre and outer terminal. If fitted, allows the DAY setpoint to be over ridden by the POT setting. Ensure the correct RANGE for the attached POT is programmed into the DIGISTAT set-up resets (see Programming Section on page 2)
