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Summary of Contents for Sentera Controls HPSA -2
- Page 1 HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS Mounting and operating instructions...
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Page 2: Table Of Contents
Table of contents SAFETY AND PRECAUTIONS PRODUCT DESCRIPTION ARTICLE CODES INTENDED AREA OF USE TECHNICAL DATA STANDARDS OPERATIONAL DIAGRAM WIRING AND CONNECTIONS MOUNTING INSTRUCTIONS IN STEPS VERIFICATION OF THE INSTALLATION INSTRUCTIONS OPERATING INSTRUCTIONS TRANSPORT AND STORAGE WARRANTY AND RESTRICTIONS MAINTENANCE... -
Page 3: Safety And Precautions
HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS SAFETY AND PRECAUTIONS Read all the information, the datasheet, Modbus map, mounting and operating instructions and study the wiring and connection diagram before working with the product. For personal and equipment safety, and for optimum product performance, make sure you entirely understand the contents before installing, using, or maintaining this product. -
Page 4: Product Description
FOR DAMPER ACTUATORS PRODUCT DESCRIPTION The HPSA -2 series are high resolution differential pressure controllers. The integrated PI control with anti-windup function offers the possibility to directly control damper actuators. They are equipped with a fully digital state-of-the-art pressure transducer designed for a wide range of applications. -
Page 5: Standards
HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS STANDARDS ■ Low Voltage Directive 2014/34/EC ► EN 60529:1991 Degrees of protection provided by enclosures (IP Code) Amendment AC:1993 to EN 60529 ► EN 60730-1:2011 Automatic electrical controls for household and similar use - Part 1: General requirements ■... -
Page 6: Mounting Instructions In Steps
HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS Never connect the common ground of G type articles to other devices powered ATTENTION by a DC voltage. If an AC power supply is used with a unit on a Modbus network, the GND terminal should NOT BE CONNECTED to other units on the network or via the CNVT-USB-RS485 converter. - Page 7 HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS To measure volume flow, use PSET-PT Pitot tube connection set, PSET-QF or PSET-PVC connection set. If you use PSET-PT, you should enter the duct cross sectional area [cm²] in Modbus register 63. If you use PSET-QF or PSET-PVC, enter the K-factor of the fan (provided by the fan /motor manufacturer) in Modbus holding register 62.
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Page 8: Verification Of The Installation Instructions
HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS Fig. 6 PWM (Open collector) connection (JP1 disconnected) External pull-up resistor 50—100 kΩ External voltage PWM GND source (5—30 VDC) Optional settings To assure correct communication, the NBT needs to be activated in only two devices on the Modbus RTU network. -
Page 9: Operating Instructions
HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS Fig. 7 Power / Modbus communication indication ATTENTION The status of the LEDs can be checked only when the unit is energised. Take the relevant safety measures! Green LED intensity can be adjusted between 0 and 100 % with a step of 10 % ATTENTION according to the value set in Holding register 80. - Page 10 HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS Press and hold the tact switch until both LEDs on the PCB blink twice and hold NO T E it until both LEDs blink again three times. If the tact switch is released before both LEDs blink again three times, the sensor will have carried out a calibration procedure instead of Modbus registers reset procedure.
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Page 11: Transport And Storage
HPSA -2 DIFFERENTIAL PRESSURE CONTROLLER FOR DAMPER ACTUATORS Fig. 12 Sensor element error Kp and Ti tune: Proper functioning of the system depends on a number of environmental factors. If its performance is not as expected and if you have extensive knowledge of PI control, you can change Kp (proportional gain) and Ti (integration time) parameters by writing in Modbus Holding Registers 57 and 58 to achieve optimal results.
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