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Climatix™

Climatix programmable controllers

POL424.50/XXX

The Climatix POL424.50/XXX programmable controllers are HVAC controllers

optimized for air handling units, rooftop units, chillers and heat pumps.

● Power supply AC 24 V or DC 24 V

● DC 24 V and DC 5 V power supplies for active sensors on board

● 3 analog inputs for temperature sensor

● 2 configurable inputs as digital input/DC 0…10 V input/temperature sensor

● 3 configurable outputs as DC 0…10 V analog output/digital output for off-board

load

● 4 digital inputs for potential-free contacts

● 1 digital input for potential-free contact or fan speed measurement

● 1 digital input galvanically isolated (AC 115…230 V)

● 7 relay outputs (6 NO contacts, 1 changeover switching type)

● RS-485 for Modbus RTU or BACnet MS/TP (with VVS10.50 or higher) for third-

party bus communication

● Process bus for network functionalities

● Local service connector for user interface and PC tools (supporting USB)

● SD card interface for application and operating system upgrade

● Operating temperature range is -40…70 °C

● Powerful service tools are available to facilitate commissioning.

CB1Q3973_en--_e

2022-03-21

Siemens

Summary of content (18 pages)

PAGE 1
Climatix™ Climatix programmable controllers POL424.50/XXX The Climatix POL424.50/XXX programmable controllers are HVAC controllers optimized for air handling units, rooftop units, chillers and heat pumps.
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Overview 1 Analog inputs 7 Process bus 2 Configurable inputs 8 Power supply 3 Sensor power supply 9 Digital outputs 4 Configurable outputs 10 Active digital input 5 Digital inputs 11 EEV 6 RS-485 12 Service interface 2 Siemens Smart Infrastructure CB1Q3973_en--_e 2022-03-21
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Communication concept Type summary Type Photo POL424.50/XXX Notes Engineering ● ● ● ● ● ● In order to protect against accidental contact with relay connections at voltages above 42 Veff, the device must be installed in an enclosure (preferably a control panel). It must be impossible to open the enclosure without the aid of a key or tool. AC 115…230 V cables must be double-insulated against safety extra-low voltage (SELV) cables. Do NOT mix SELV / PELV and line voltage on the same terminal.
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Disposal The device is considered an electronics device for disposal in terms of European Directive 2012/19/EU 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.
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Technical data Power supply AC 24 V, G0 (T7) Operating voltage AC 24 V ±20% / DC 24 V ±10% Frequency 45…65 Hz @ AC 24 V Max. AC current 1.6 A @ AC 24 V Max. DC current 1.5 A @ DC 24 V Max. external supply line fusing 6.3 A slow wire fuse or circuit breaker Relay output Q1 (T8) Contact Monostable, NO/NC contact, SPDT Switching voltage AC 24…230 V (-20%, +10%) DC 18…30 V Rated current (res./ind.) AC 3 A (res.)/2 A (ind. cosφ 0.6) DC 3 A (res.) Min.
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WARNING Do NOT mix SELV / PELV and line voltage on the same terminal. Use external protection for inductive load. Relay output Q3, Q4 (T9) Q5, Q6 (T10) Contact Monostable, NO contact, SPST Switching voltage AC 24…230 V (-20%, +10%) DC 18…30 V Rated current (res./ind.) AC 3 A (res.)/2 A (ind. cosφ 0.6) DC 3 A (res.) Min. switching current @ AC 19 V 30 mA Endurance 100,000 cycles @ AC 230 V, 3.0 A (res.) Max. external supply line fusing 6.
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WARNING Do NOT mix SELV / PELV and line voltage on the same terminal. Use external protection for inductive load. Relay output Q7, Q8 (T11) Contact Monostable, NO contact, SPST Switching voltage AC 24…230 V (-20%, +10%) DC 18…30 V Rated current (res./ind.) AC 3 A (res.)/2 A (ind. cosφ 0.6) DC 3 A (res.) Min. switching current @ AC 19 V 30 mA Endurance 100,000 cycles @ AC 230 V, 3.0 A (res.) Max. external supply line fusing 6.
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0.3000 1.00 0.2500 0.80 0.2000 Resolution [K] Accuracy [K] 1.20 0.60 0.1500 0.40 0.1000 0.20 0.5000 0.00 -48.0 -25.0 0.0 25.0 50.0 75.0 100.0 125.0 150.0 0.0000 -48.0 -25.0 0.0 25.0 50.0 75.0 100.0 125.0 150.0 Temperature [°C] Temperature [°C] These data are acquired under operating temperature of 25 °C.
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Contact resistance Max. 200 Ω (closed) Min. 50 kΩ (open) Delay 10 ms Pulse frequency Max. 20 Hz WARNING Avoid negative voltages at the analog inputs because the conversion leads to undetermined results. Configurable outputs X3, X4 (T2), X5(T3) Configurable By software Reference potential Terminals ┴ DC 0…10 V output Resolution 30 mV Accuracy 100 mV Output current Max.
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DC output for off-board load Switching voltage DC 24 V Switching capacity Max. 25 mA Use free wheel diode for inductive load. Digital inputs X6, X7 (T3) DI1, DI2 (T4) 0/1digital 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.
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Digital input X8 (T3) Configurable By software 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. 20 Hz Pulse measurement Sensor Open-collector Sampling voltage DC 24 V, Max. 8 mA Max. speed 6000 RPM Min. ON/OFF time 500 µs Powering sensors Active/ratiometric DC 5 V, DC 24 V (T2) Voltage/current DC 5 V ±2.
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Active digital input DL1 (T12) Digital input (0/1 binary) Galvanically isolated voltage input Nominal voltage AC 115…230 V (-15%, +10%) Frequency range 45…65 Hz Input current 3 mA @ AC 230 V Delay 100 ms Pulse frequency Max. 5 Hz Interfaces Process bus CE+, CE- (T6) Based on KNX TP1 Bus connection CE+, CE-, NOT interchangeable Bus electronics Galvanically isolated Bus load Max.
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Process bus CE+, CE- (T6) Bus cable length between 2 nodes Max. 350 m Total length of bus cable Max. 700 m DPSU 40 mA rated current Third party bus (RS-485 Modbus RTU) A+, B-, REF (T5) RS-485 (EIA-485) Modbus RTU or BACnet MS/TP°mode Bus connection A+, B-, REF Bus electronics NOT galvanically isolated Bus cable Shielded if length>3 m, twisted pair Bus polarization Configurable by software Bus termination None* ° BACnet MS/TP (with BSP 10.
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Local-HMI RS-485 (EIA-485) NOT galvanically isolated Bus polarization 680 Ω/680 Ω Bus termination 120 Ω /1 nF Supply voltage DC 24 V, Max.
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Connection terminals (available on request) Phoenix FKCT 2,5/2-ST OG Phoenix MVSTBW 2,5/2-ST OG Solid wire 0.5…2.5 mm² Stranded wire (twisted or with ferrule) 0.5…1.5 mm² Cable length In compliance with the load, local regulations and installation documents Real-time clock Buffering with internal Gold Cap Min. 4 hours SD card SD card At the right side of the housing Max.
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Standards, directives and approvals (applications) industrial and industrial environments. EU conformity (CE) CE1T3973xx *) RCM conformity (EMC) CE1T3973en_C1 *) Listings UL916, UL873 http://database.ul.com/ CSA Class 4812 http://www.csagroup.org Environmental compatibility The product environmental declaration (232370-T-1109_EN *)) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal).
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Hardware I/Os POL424.50 X1, X2 (Ni1000/ Pt1000 / 0…10 V / DI) ✓ X6, X7 (binary) ✓ X8 (binary/fan speed) ✓ D1, D2 (binary) ✓ DL1 (active AC 115…230 V) ✓ Configurable outputs X3, X4, X5 (DC 0...10 V analog output / off-board digital output) ✓ Digital outputs Q1, Q3, Q4, Q5, Q6 (relay output) ✓ Q7, Q8 (relay output) ✓ Digital inputs DO1, DO2 (triac output) Interfaces Process bus interface ✓ Modbus RTU or BACnet MS/TP (with BSP 10.
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Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug +41 58 724 2424 www.siemens.com/buildingtechnologies Document ID CB1Q3973_en--_e Edition 2022-03-21 © Siemens Switzerland Ltd, 2016 Technical specifications and availability subject to change without notice.