Complementary
Number of port	1 LAN expansion bus; 1 RS485 - screw terminal block (Modbus serial link)
Input/output number	5 analog output(s); 6 digital input(s); 5 analog input(s); 6 digital output(s)
Discrete input logic	Sink or source (positive/negative)
Contacts usage	Volt-free contacts
Analogue input type	voltage 0...5 V (ratiometric); voltage 0...10 V; current 0...20 mA/4...20 mA; voltage 0...1 V; temperature probe - 50...100 °C - resolution: 0.1 °C
Sensor power supply	12 V DC at 85 mA; 5 V DC at 20 mA
[Us] rated supply voltage	24 V; 12...24 V AC
Realtime clock	Built-in clock at -20…55 °C
Display type	Four 7-segment display units
Overvoltage category	II
Local signalling	6 LEDs (red); 5 LEDs (green); 7 LEDs (amber) for programmable
Mounting support	DIN rail
Width	70.2 mm
Height	87 mm
Depth	61.6 mm
Net weight	0.19 kg
Contractual warranty
Warranty (in months)	18
Environment
Directives	2006/95/EC - low voltage directive; 86/188/EEC - physical agents (noise) directive
Standards	EN 60730-1; UL 60730-1; IEC 61000-4-6; IEC 61000-4-3; UL 60730-2-9; IEC 61000-4-4; IEC 61000-4-2; CSA E60730-2-9; IEC 61000-4-5; EN 60068-2-6 Fc; IEC 61000-4-11; EN 60730-2-9; EN 60068-2-27; CAN/CSA-E60730-1; UL94 (material V0)
Product certifications	EAC; CSA; RCM; CE; cURus
Ambient air temperature for operation	-20…55 °C conforming to UL 60730-1
Ambient air temperature for storage	-40…85 °C
Relative humidity	10…90 % non-condensing
IP degree of protection	IP20
Pollution degree	2
Logistical informations
Country of origin	IT
Main
Range of product	Modicon M171/M172
Product or component type	Controller
Product specific application	HVAC and pumping solution
Variant	Programmable
Total inputs/outputs	22
Discrete input number	6
Discrete output number	1 for open collector; 3 for relay outputs SPST with same common; 2 for relay outputs SPST with independent common
Discrete output current	2 A for relay
Analogue input number	2 configurable; 3 analog input NTC
Analogue output number	3 voltage, range: 0...10 V; 2 PWM/PPM, range: 20 kHz, 12 V, 35 mA
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	13.200 cm
Package 1 Width	9.000 cm
Package 1 Length	18.500 cm
Package 1 Weight	251.000 g
Unit Type of Package 2	S02
Number of Units in Package 2	6
Package 2 Height	15.000 cm
Package 2 Width	30.000 cm
Package 2 Length	40.000 cm
Package 2 Weight	1.726 kg

The Modicon M171 PLC controller in optimized version is designed for simple and compact applications in the field of HVAC machines and pump automation. Thanks to its small design, it can be used in a space-saving manner. The controller has a total of 22 integrated I/Os, of which 6 are digital and 5 are configurable (U/I/T) analog inputs, 6 are digital and 5 are configurable (U/I/PWM/PPM) analog outputs. Integrated Modbus SL interface that also enables remote downloading. The power supply is via 24 VDC or 12 VAC to 24 VAC. The digital outputs are designed as relays (2A / 230VAC). One output is designed as an open collector. The connections are made using removable screw terminal blocks (not included in delivery). Mounted on 35mm top hat rail. Is programmed with the free EcoStruxure Machine Expert - HVAC software. Certified to CE, cURus (UL recognized), CSA, EAC, RCM, RoHS China.