Climatix™ Climatix extension module ECV POL94E.00/xxx, POL94U.00/xxx The ECV extension modules are designed for use in connection with a broad range of bipolar stepper motors.
Technology Electronic expansion valve Electronic expansion valves control the refrigerant mass flow in evaporators for chiller, airconditioner and refrigerator applications. In addition, modulating valves can be used for several control functions such as liquid injection, hot gas bypass and evaporator pressure regulation. The POL94X.00/xxx extension module is designed as a driver for electronic expansion valves, features a channel drive for a wide range of bipolar stepper motors.
Technical data General data Dimensions (width x height x depth) 72 x 110 x 75 mm Weight excl. packaging POL94E.00/xxx POL94U.00/xxx 152 g 191 g Base Plastic, pigeon-blue RAL 5014 Housing Plastic, light-grey RAL 7035 Power supply Power supply AC/DC 24 V Operating voltage AC 24 V -15%, +20%; DC 24 V +/-10% Current with AC 24 V 900 mA Current with DC 24 V 500 mA Frequency 45…65 Hz Power consumption ca.
Digital input DL1 (T4) 0/1 digital signal (binary) Galvanically separated voltage contact Rated voltage AC 115…230 V (-15%, +10%) Frequency range 45…65 Hz Input current 3 mA at AC 230 V Delay 100 ms Pulse frequency Max. 5 Hz Configurable Via software Reference potential Terminals ┴ Contact voltage Max.
NTC 10k 75…99 °C 1K 0.3 K 100…124 °C 3K 1.0 K 125…150 °C 6K 2.5 K NTC 100k Sensor current 140 μA Temperature range Accuracy Resolution -25…-11 °C 3K 0.2 K -10…9 °C 1K 0.1 K 10...99 °C 0.5 K 0.1 K 100...150 °C 1K 0.2 K 0…2.500 Ω Sensor current 1.
DC 4…20 mA input Resolution 1 μA Accuracy at 4 mA 25 μA Accuracy at 12 mA 70 μA Accuracy at 20 mA 120 μA Voltage source DC 0…10V Current transmitter Voltage input DC…10 V and current input 4…20 mA Digital inputs X1…X3 (T1) 0/1 digital signal (binary) For potential-free contacts Sampling voltage / current DC 24 V / 8 mA Contact resistance Max. 200 Ω (closed) Min. 50 kΩ (open) Delay 10 ms Pulse frequency Max.
DC output for off board loads Switching voltage DC 24 V Switching capacity Max. 25 mA Connecting voltage output and off board relay to universal I/Os Analog output X3 (T1) DC 0...
Power supply for active sensors (DC 24 V) and ratiometric sensors (DC 5 V) Voltage / current DC 5 V ±2.5% / 20 mA DC 24 V +10 %, -25% / 40 mA Reference potential Terminals ⊥ Connection Short-circuit-proof Sensor supply Connecting ratiometric sensor to universal I/O Pressure transmitter Ratiometric sensor Motor driver Driver for bipolar stepper motor (T2) Constant-current mode Short-circuit-proof Switching frequency 15 kHz Mode Full step Max.
See also "Approved valve settings [➙ 14]"! Siemens Smart Infrastructure 9 CB1Q3950en 2020-06-08
Terminals and interfaces Connection terminals Possible plugs for I/O signals (not included) Phoenix FKCVW 2,5 / x-ST Phoenix FKCT 2,5 / x-ST Phoenix MVSTBW 2,5 / x-ST Phoenix FRONT-MSTB 2,5 / x-ST Solid wire 0.5…2.5 mm² Stranded wire (twisted or with ferrule) 0.5…1.
Conformity Environmental conditions Operation IEC 60721-3-3 class 3K5 Temperature POL94E -40...70 °C (-40... 158 °F) Temperature POL94U -40...60 °C (-40... 140 °F) Relative humidity 5%...95% r.h. (non-condensing) Absolute humidity 1...29 g/m³ Atmospheric pressure Min. 700 hPa (corresponding to max. 3’000 m above sea level) Mechanical conditions IEC 60721-3-3 class 2M2 Transport (packaged for transport) IEC 60721-3-2 class 2K3 Temperature -40…70 °C (-40... 158 °F) Humidity 5%...95% r.h.
Functions LEDs for diagnostics LED BSP Mode LED Application running Green on BSP error (software error) Red flashing at 2 Hz Hardware error Red on LED BUS This LED indicates the status of the communication with the controller.
Addressing with DIP switches The extension module is equipped with DIP switches for communication with the controller. Switches 1, 2, 3, 4, and 5 are configurable to set the slave address, while switch 6 acts as peripheral bus termination. When the extension module operates as the termination in the network, switch 6 must be set to "ON" The bit order for the switches is from 5 to 1. The lowest bit is 5 while the highest bit is 1.
DIP switch configuration of extension module Slave address (controller) Switch 1 Switch 2 Switch 3 Switch 4 Switch 5 Off Off On Off Off 30 On On On On Off 31 On On On On On 4 Schematics 5…29 Approved valve settings NOTICE Please note the following regarding approved valve settings! ● ● ● Always consult in addition the valve manufacturer's EEV documentation and follow its recommendations. Special EEV procedures must be implemented in the HVAC application.
Maximum cable length 8 m. If a longer cable is used, communication inductors such as the Danfoss AKA211 should be used.
Product documentation Document ID Title Topic Q3900en Climatix range Climatix product range M3910 Mounting instruction Climatix Mounting and installation A6V11724227 Danfoss declaration of compatibility EEV compatibility A6V11787080 Sporlan declaration of compatibblity EEV compatibility Notes Security CAUTION National safety regulations Failure to comply with national safety regulations may result in personal injury and property damage.
Disposal The device is considered an electronic device for disposal in accordance with the European Guidelines and may not be disposed of as domestic garbage. ● Dispose of the device through channels provided for this purpose. ● Comply with all local and currently applicable laws and regulations. Warranty Technical data on specific applications are valid only together with Siemens products listed under "Equipment combinations".
Dimensions Layout of EVC modules: POL94E.00/XXX, POL94U.
3950M01_01 110 116 POL94E.0 110 116 3950M03_01 72 POL94U.
3950M02_01 47,5 E93189 75 45 110 122,5 Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug Tel. +41 58 724 2424 www.siemens.com/buildingtechnologies 20 Siemens Smart Infrastructure Document ID CB1Q3950en Edition 2020-06-08 © Siemens Switzerland Ltd, 2009 Technical specifications and availability subject to change without notice.
