Phoenix Contact IB ST 24 AI 4/EF Analog Input Module

Selling Points

14 Differential Analog Input Channels: Connects either voltage or current signals with high precision.
2DIN Rail Mounting: Easy installation on standard DIN rail systems.
3IP20 Protection: Ensures reliable operation in harsh industrial environments.
4Wide Operating Temperature Range: Operates from -25°C to +55°C, suitable for various industrial settings.
5Robust Design with Watchdog Circuit: Provides continuous monitoring and diagnostics for enhanced reliability.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Parameter	Value	Parameter	Value
Width	118 mm	Height	116 mm
Depth	117 mm	No. of channels	2
Connection method	ST local bus connector	Transmission speed	500 kbps
Transmission physics	Copper	ID code (dec.)	126
ID code (hex)	7E	Length code (hex)	4
Length code (dec)	4	Input address area	8 Byte
Output address area	0 Byte	Register length	8 Byte
Input name	Analog inputs	Number of inputs	max. 4 (differential inputs, voltage or current)
A/D conversion time	max. 10 µs (per channel)	Connection technology	2-, 3-, 4-conductor (shielded)
Measuring principle	Successive approximation	Measured value representation	16 bit two's complement
Number of inputs	4 (differential inputs, voltage)	A/D converter resolution	12 bit (4096 steps; 4.88 mV/quantization step (BP mode); 2.44 mV/quantization step (SF and SF4 mode))
Voltage input signal	0 V ... 10 V (SF and SF4 mode) -10 V ... 10 V (Mode BP)	Input resistance of voltage input	200 kΩ
Common mode voltage range signal - ground	-35 V DC ... 35 V DC	Number of inputs	4 (Differential inputs, current)
A/D conversion time	max. 10 µs	A/D converter resolution	12 bit (4096 steps; 4.88 μA/quantization step (SF mode); 3.91 µA (SF4 mode); 7.8 µA (BP mode))
Current input signal	0 mA ... 20 mA (SF mode) 4 mA ... 20 mA (BP and SF4 mode)	Input resistance current input	50 Ω
Product type	I/O component	Type	modular INTERBUS Smart Terminal
Operating mode	Process data mode with 4 words	Diagnostics messages	Failure of the internal I/O supply I/O error message sent to the bus coupler F1 fuse failure I/O error message sent to the bus coupler I/O supply failure I/O error message sent to the bus coupler
Connection method	ST local bus connector	Designation	Communications power
Supply voltage	9 V DC (from the ST local bus)	Current consumption	typ. 54 mA max. 80 mA
Power consumption	typ. 0.5 W	Designation	U
Supply voltage	24 V DC	Supply voltage range	19.5 V DC ... 30.2 V DC (including all tolerances, including ripple)
Current consumption	typ. 45 mA (I typ. 120 mA (I	Designation	U
Supply voltage	15 V ±6 %	Current consumption	max. 100 mA (Total for all channels)
Test voltage: Bus/Inputs	500 V AC, 50 Hz, 1 min	Test voltage: Supply voltage/inputs	500 V AC, 50 Hz, 1 min
Test voltage: Supply voltage/Ground conductor	500 V AC, 50 Hz, 1 min	Test voltage: I/O voltage/Ground conductor	500 V AC, 50 Hz, 1 min
Connection name	Terminal block	Connection method	Screw connection
Conductor cross section rigid	0.2 mm² ... 2.5 mm²	Conductor cross section flexible	0.2 mm² ... 2.5 mm²
Conductor cross section AWG	24 ... 12	Stripping length	8 mm
Connection method	Screw connection	Conductor cross section, rigid	0.2 mm² ... 2.5 mm²
Conductor cross section, flexible	0.2 mm² ... 2.5 mm²	Conductor cross section AWG	24 ... 12
Stripping length	8 mm	Ambient temperature (operation)	-25 °C ... 55 °C
Degree of protection	IP20	Air pressure (operation)	80 kPa ... 106 kPa (up to 2000 m above sea level)
Air pressure (storage/transport)	80 kPa ... 106 kPa (up to 2000 m above sea level)	Ambient temperature (storage/transport)	-25 °C ... 70 °C
Permissible humidity (operation)	10 % ... 95 % (non-condensing)	Permissible humidity (storage/transport)	10 % ... 95 % (non-condensing)
Protection class	III (IEC 61140, EN 61140, VDE 0140-1)	Mounting type	DIN rail mounting

Specifications may be subject to change without notice