ClimatixTM Climatix programmable controllers POL427.50/STD The Climatix POL427.50/STD programmable controller is a HVAC controller optimized for district heating substation.
Overview T1 2 Siemens AG Building Technologies Analog inputs T6 Process bus T2,T3 Configurable inputs T7 Power supply T2 T8-T11 Digital outputs T2,T3 Configurable outputs T12 Active digital input T4 Digital inputs T14 M-Bus master T5 RS-485 T-HI Service interface Sensor power supply A6V11185116_en_a 2017-08-11
Communication concept Type Type Photo POL427.
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. Use external protection for inductive load of relay outputs.
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 1.1 A @ AC 24 V Max. DC current 1.0 A @ DC 24 V Max. external supply line fusing 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.
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 6.3 A slow wire fuse or circuit breaker WARNING Do NOT mix SELV / PELV and line voltage on the same terminal. Use external protection for inductive load.
Triac outputs DO1, DO2 (T11) Triac data Switching voltage AC 24…230 V (-20%, +10%) Switching capacity max. 500 mA / min. 10 mA Max. external supply line fusing 2.0 A, slow wire fuse or circuit breaker WARNING Do NOT mix SELV / PELV and line voltage on the same terminal. Use external protection for inductive load.
Configurable inputs X1, X2 (T2), X6, X7 (T3) Configurable By software Reference potential Terminals ┴ NTC 10k (B25/85=3977 K) Temperature range -50…100 °C PT1000 Temperature range -50…150 °C DC 0…5/0…10 V ratiometric sensor Resolution 10 mV Accuracy 100 mV Input resistance 100 kΩ Digital input 0/1 digital signal (binary) For potential free contacts Sampling voltage/current DC 21.2 V, 7.8 mA Contact resistance max. 200 Ω (closed) min. 50 kΩ (open) Delay 10 ms Pulse frequency max.
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. 10 mA PWM outputs Frequency Duty cycle Max. current Signal amplitude 2.5 kHz 0...100% (at an increment of 0.5%) 10 mA 10 V Digital inputs DI1, DI2 (T4) Siemens AG Building Technologies 0/1digital signal (binary) For potential free contacts Sampling voltage/current DC 24 V, 12 mA Contact resistance max. 200 Ω (closed) min.
Digital input X8 (T3) Configurable By software 0/1 digital signal (binary) For potential free contacts Sampling voltage/current DC 21.2 V, 8 mA Contact resistance max. 200 Ω (closed) min. 50 kΩ (open) Delay 10 ms Pulse frequency max. 300 Hz Pulse measurement Sensor Open-collector Sampling voltage DC 21.2 V, 8 mA Max. speed 18000 RPM Min.
Active digital input DL1 (T12) Digital input (0/1 binary) Galvanic 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 Siemens AG Building Technologies Bus connection CE+, CE-, NOT interchangeable Bus electronics Galvanic isolated Bus load max.
Third-party bus (Modbus RTU or BACnet MS/TP) A+, B-, REF (T5) RS485 (EIA-485) Bus connection Bus protocols Bus electronics Bus cable Bus polarization Baud rate Bus termination * 1 interface on terminal T5 A+, B-, REF Modbus RTU mode or BACnet MS/TP not galvanic isolated Shielded twisted pair (like AWG 24) Switchable by software (680 Ω) 600, 1200, 2400, 4800, 9600, 19200, 38400 None (require external termination, e.g.
M-Bus CM+, CM- (T14) Controller M-Bus master Bus connection terminals CM+, CM- (interchangeable) Bus connection / electronics not galvanic isolated Bus voltage DC 28 V (short-circuit-proof) Bus length max. 50 m Number of bus devices (stand. load 1.5 mA) max.
Ambient conditions and protection classification Climatic ambient conditions ● Transport (packaged for transport) as per Temperature: -40...70 °C EN 60721-3-2 Air humidity: <95 % r.h. (no condensation) Air pressure: min. 260 hPa, corresponding to max. 10’000 m above sea level ● Operation as per EN 60721-3-3. Mechanical ambient conditions · Transport as per EN 60721-3-2 Temperature: -40...70 °C Restriction process bus: -25…70 °C Air humidity: <90 % r.h. (no condensation) Air pressure: min.
Climatix controller Hardware I/Os Analog inputs B1, B2, B3 (PT1000) ✓ Configurable inputs X1, X2, X6 , X7 (PT1000 / NTC 10k / NTC 1k / LG-Ni1000 / DC 0…10 V/ DI) ✓ Digital inputs X8 (binary/high speed) ✓ D1, D2 (binary) ✓ DL1 (active AC 115…230 V) ✓ Configurable outputs X3, X4, X5 (DC 0...
Dimensions POL427.50/STD Issued by Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 www.siemens.com/buildingtechnologies 16 Siemens AG Building Technologies Document ID A6V11185116_en_a Edition 2017-08-11 © Siemens Switzerland Ltd, 2017 Technical specifications and availability subject to change without notice.
