DI4 Four Channel Digital Input Module Technical Data Sheet

The DI4 is a four channel digital input module supporting contact closure or voltage logic inputs. When using input sensors such a proximity detectors, 24V power supply outputs can be optionally used to power the sensor.

Main DI4 Characteristics
Number of channels	4
Compatible terminal blocks	D12
Group of input channels	1 group
Digital input voltage	24 Vdc
Input logic type	Positive logic (sink)
Digital input number	4 configurable type 2 or type 3 conforming to IEC 61131-2
Input wiring mode	1, 2 or 3 wires
Digital input current	2.3 mA (type 3) 6.32 mA (type 2)
Current state 0 guaranteed	<= 1.5 mA
Current state 1 guaranteed	>= 2 mA (type 3) >= 6 mA (type 2)
Voltage state 0 guaranteed	<5 Vdc
Voltage state 1 guaranteed	11 to 30 Vdc
Input impedance	8 kΩ Type 3 3.58 kΩ Type 2
Input filtering	0 to 20 ms de-bounce configurable in 0.1 ms step
Paralleling of inputs	Yes
Input diagnostic	Field power supply not detected Sensor power supply not detected
Power supply type	Bus power from power supply bus (24 Vdc) Field power from power supply field (24 Vdc)
Typical current consumption	27.6 mA at 24 Vdc on the Bus current 1.2 mA at 24 Vdc on the internal field current minimum, with all channels disconnected 501.4 mA at 24 Vdc on the internal field current maximum, with all connected and maximum field sensor current
Power dissipation	1.3 W maximum at 24 Vdc
Isolation	Between channels None Between channels and bus 1500 Vac Between channels and ground 1500 Vac
Maximum cable length	Unshielded Maximum length 30 m (98' 5") Shielded Maximum length 1000 m (656' 2.4")
Net weight	0.045 kg (1.59 oz)
Hot swap	Yes
Housing color	Grey

Environment
IP degree of protection	IP20
Product certification	CE CULus RCM
Standards	EN/IEC 61326-1 EN 61010-2-201 UL 61010-2-201
Directives	2014/30/EU - Electromagnetic compatibility 2014/35/EU - Low voltage 2011/65/EU, 2015/863/EU RoHS
Operating temperature	0 to 55 °C (32 to 131 °F)
Storage temperature	-5 to 60 °C (23 to 140 °F)
Relative humidity	5 % to 95 % without condensation
Operating altitude	0 to 2000 m (0 to 6561 ft)
Pollution degree	2
Vibration	2 g
Shock	15 g for 11 ms

Derating

With 200 mA for sensor power supply load 4 channels Type 3 up to 55 °C (131 °F) 4 channels Type 2 up to 40 °C (104 °F) 3 channels Type 2 from 40 to 45 °C (104 to 113 °F) 2 channels Type 2 from 45 to 55 °C (113 to 131 °F) 2 channels Type 3 and 1 channel Type 2 up to 55 °C (131 °F)

With 500 mA for sensor power supply load 4 channels Type 3 up to 50 °C (122 °F) 4 channels Type 2 up to 40°C (104 °F) 3 channels Type 2 from 40 to 45 °C (104 to 113 °F) 3 channels Type 3 from 50 to 55°C (122 to 131°F) 2 channels Type 2 from 45 to 50 °C (113 to 122 °F) 2 channels Type 3 and 1 channel Type 2 up to 50 °C (122 °F) 1 channel Type 2 from 50 to 55 °C (122 to 131 °F)

Dimension Size a 15 mm (0.59") b 100 mm (3.94") c 66 mm (2.60") c plus Terminal Block 101.9 mm (3.98")

DI4 Four Channel Digital Input Terminal Wiring

DANGER
HAZARD OF ELECTRICAL SHOCK, EXPLOSION OR ARC FLASH Do not exceed the device’s ratings. Ensure all cables and wiring harness are secured using a relevant strain relief mechanism. Failure to follow these instructions will result in death or serious injury

 

WARNING
UNINTENDED EQUIPMENT OPERATION Ensure wires are routed to minimize the pick-up of Electromagnetic interference (EMI) keeping cable lengths to a minimum. Only use copper cables (except for the thermocouple wiring). Failure to follow these instructions can result in death, serious injury, or equipment damage

Terminal Wiring	Cross Section
1 solid conductor	0.2 to 2.5 mm² (American Wire Gauge (AWG) 24 - AWG 14)
2 solid conductors	0.2 to 1.5 mm² (AWG 24 - AWG 16) - both conductors must be the same cross section
1 stranded conductor without ferrule	0.2 to 2.5 mm² (AWG 24 - AWG 14)
1 stranded conductor with single ferrule	0.2 to 1.5 mm² (AWG 24 - AWG 16)
2 stranded conductors with twin ferrule	0.2 to 0.75 mm² (AWG 24 - AWG 20)

Terminal block captive screws are not supplied tightened and must be tightened to 0.5 to 0.6 Nm (0.30 lb-ft) using a flat tipped screwdriver with a diameter of 3.5 mm (0.14"). Stripping length for all cable types is 10 mm (0.39").

CAUTION
UNINTENDED EQUIPMENT BEHAVIOR Use the sensor and actuator power supply only for supplying power to sensors or actuators connected to the module. Failure to follow these instructions can result in injury or equipment damage

Key	Description
1	The sensor power outputs, pins 1, 3, 5 and 7, are protected within the module by a common self-resetting eFuse (nominally 500 mA). The module has two power supply diagnostics flags, one for the field power incoming from the backplate, and one for the outgoing power to the sensor.
2	SELV 24 V PSU
3	External fast blow fuse appropriate for load, or protection to an equivalent level

Last update - April 2026