Year: 2026

Analog inputs

AM 280/A AM 282/A AM 280/B

Number of inputs 4 4 4

Type Voltage input Voltage input Current input

Resolution 14 bit 16 bit 14 bit

Signal range ±10 V or 0 – Uref (10 V) ±10 V or 0 – Uref (10 V) 0 – 20 mA or 4 – 20 mA

Max. measurement signal ±10.4 V ±10.4 V-0.8 mA … 20.8 mA

Input type Differential or single-ended Differential or single-ended Differential

Galvanic isolation No No No

Reference voltage output 10 V ±2.5 %; max. 20 mA 10 V ±2.5 %; max. 20 mA

Scan repeat cycle 1 ms 1 ms 1 ms

Input impedance in signal range 10 MΩ 10 MΩ < 200 Ω

Input filter characteristic First order First order First order

Limiting frequency of the input filter 250 Hz 250 Hz 250 Hz

Conversion method Successive approximation Successive approximation Successive approximation

Monotonicity without error codes Yes Yes Yes

Common mode range ±13.5 V ±13.5 V ±13.5 V

Common mode rejection ratio > 80 dB > 80 dB > 80 dB

Value of the lowest bit (LSB) 1.3 mV 1.3 mV 1.35 μA

Maximum permitted continuous load

(without damage) ±30 V

Typ. temp. coefficient measurement error ±5 ppm of scale end value / °C

Max. temp. coefficient measurement error ±20 ppm of scale end value / °C

Largest error at 25 °C ±0.01 % of scale end value

Analog outputs

AM 280/A AM 282/A AM 280/B

Number of outputs 4 4 4

Type Voltage output Voltage output Current output

Digital resolution 12 bit 14 bit 12 bit

Signal range ±10 V ±10 V 0 – 20 mA

Galvanic isolation No No No

Conversion cycle 1 ms 1 ms 1 ms

Value of the lowest bit (LSB) 5.32 mV 1.33 mV 5.39 μA

Monotonicity Yes Yes Yes

Load resistance ≥ 1000 Ω ≥ 1000 Ω ≤ 600 Ω

Largest capacitive load ≤ 10 nF ≤ 10 nF

Differential non-linearity ≤±1 LSB

Settling time when changing over the full

range (with ohmic load) ≤ 50 μs

Typ. temp. coefficient analog output error ±20 ppm of scale end value / °C

Max. temp. coefficient analog output error ±30 ppm of scale end value / °C

Largest error at 25 °C ±0.15 % of scale end value

Product features

•  4 analog inputs

•  4 analog outputs

•  Signal form: Voltage or current

•  Sensor failure detection

•  Resolution of the outputs up to 14 bit

•  Electronic parameter chip

Short description

The AM 28x/x series is a hybrid module and enables the connection of four analog inputs and four analog

outputs with voltage or current signals. The analog inputs of the AM 28x/A process both single-ended as

well as differential voltage signals. The AM 280/B is equipped with current inputs and outputs.

A sensor failure, should it occur, is reported to the higher-level CPU module and can be evaluated

accordingly in the application. These modules are attached directly to a CPU module or can be operated

with all KEBA controls by means of bus couplers.

Dimensions, weight

Height 120 mm

Width 22.5 mm front plate / 32.5 mm incl. plug

Depth 100 mm

Weight 135 g

Analog outputs

Number / type of outputs 4 voltage outputs

Resolution 12 bit

Signal range ±10 V

Galvanic isolation No

Conversion cycle 1 ms

Value of the lowest bit (LSB) 5.32 mV

Monotonicity Yes

Load resistance ≥ 1000 Ω

Largest capacitive load ≤ 10 nF

Differential non-linearity ≤±1 LSB

Settling time when changing over the full range

(with ohmic load) ≤ 50 μs

Typ. temp. coefficient analog output error ±20 ppm of scale end value / °C

Max. temp. coefficient analog output error ±30 ppm of scale end value / °C

Largest error at 25 °C ±0.15 % of scale end value

Dimensions, weight

Height 120 mm

Width 22.5 mm front plate / 32.5 mm incl. K-bus plug

Depth 100 mm

Weight 135 g

Environmental conditions

Operating temperature +5 °C … +55 °C

Storage temperature-40 °C … +70 °C

Relative air humidity 10 % to 95 % (non-condensing)

Vibration resistance / shock resistance Acc. to EN 61131-2

Analog inputs

Number / type of inputs 4 voltage inputs

Resolution 14 bit

Signal range ±10 V or 0 – Uref (10 V)

Max. measurement signal ±10.4 V

Input type Differential or single-ended

Galvanic isolation No

Reference voltage output 10 V ±2.5 %; max. 20 mA

Scan repeat cycle 1 ms

Input impedance in signal range 10 MΩ

Input filter characteristic – order First order

Input filter limiting frequency 250 Hz

Conversion method Successive approximation

Monotonicity without error codes Yes

Synchroneity control ±13.5 V

Synchroneity suppression > 80 dB

Value of the lowest bit (LSB) 1.3 mV

Maximum permitted continuous load (wit

hout damage) ±30 V

Typ. temp. coefficient measurement error ±5 ppm of scale end value / °C

Max. temp. coefficient measurement error ±20 ppm of scale end value / °C

Largest error at 25 °C ±0.01 % of scale end value

Dimensions, weight

Height 120 mm

Width 22.5 mm front plate / 32.5 mm incl. K-bus plug

Depth 100 mm

Weight 135 g

Environmental conditions

Operating temperature +5 °C … +55 °C

Storage temperature-40 °C … +70 °C

Relative air humidity 10 % to 95 % (non-condensing)

Vibration resistance / shock resistance Acc. to EN 61131-2

Product features

• 4 analog voltage inputs usable as differential inputs

or as single-ended inputs

• Resolution 14 bit

• Sensor failure detection

• Electronic parameter chip

Short description

Analog input module KeConnect AI 240/A features four analog voltage inputs that process differential or

ratiometric input signals in the range from ±10 V or 0-10 V with a resolution of 14 bit.

A sensor failure, should it occur, is reported to the higher-level central module and can be evaluated in

the application.

This module is attached directly to a CPU module or can be operated with all KEBA controls by means of a

bus coupler.

Environmental conditions

Operating temperature +5 °C … +55 °C

Storage temperature-40 °C … +70 °C

Relative air humidity 10 % to 95 % (non-condensing)

Vibration resistance / shock resistance Acc. to EN 61131-2

General

Supply voltage 24 V DC from K-bus, 5 V DC from K-bus

Overvoltage category II

Protection class III acc. to EN 61131-2

Addressing on K-bus Via 16-digit address switch, on the side

Type of terminals Open – pitch 5.08 mm

Power consumption K-bus 24 V 2 W

Power consumption K-bus 5 V 0.3 W

Digital inputs

DM 272/A DM 276/A

Number / wiring of inputs 8x sink 6x source

Input type Type 1 (acc. to EN 61131-2)

Voltage range for “1” 15 V ≤ UH ≤ 30 V

Voltage range for “0”-3 V ≤ UL ≤ 5 V

Debouncing Configurable 1 ms, 100 ms

Cycle time 1 ms

Status display Green LED

Galvanic isolation Yes, electric strength 707 V with isolated ground connection

Interrupt inputs

Number of inputs Two of the digital inputs can be used as interrupt inputs

Voltage range for “1” 15 V ≤ UH ≤ 30 V

Voltage range for “0”-3 V ≤ UL ≤ 5 V

Response time of the K-bus interrupt 50 μs

Status display Green LED

Galvanic isolation Yes

Digital outputs

DM 272/A DM 276/A

Number / wiring of outputs 8x source 8x sink

Nominal voltage 24 V DC

Processing time 1 ms

Nominal current of digital outputs 2 A at 50 % simultaneity

Protection facility Short-circuit protection

Max. inductive load 1 J at max 0.2 Hz

Status display Orange LED

Galvanic isolation Yes, from the control electronics and between one another,

electric strength 707 V with isolated ground connection

Dimensions, weight

Height 120 mm

Width 22.5 mm front plate / 32.5 mm incl. K-bus plug

Depth 100 mm

Weight 135 g

Environmental conditions

Operating temperature +5 °C … +55 °C

Storage temperature-40 °C … +70 °C

Relative air humidity 10 % to 95 % (non-condensing)

Vibration resistance / shock resistance Acc. to EN 61131-2

General

Supply voltage 24 V DC from front

(nominal voltage tolerance: 19.2 V to 30 V, acc. to EN 61131-2)

24 V DC from K-bus, 5 V DC from K-bus

Overvoltage category II

Protection class III acc. to EN 61131-2

Addressing on K-bus Via 16-digit address switch, on the side

Type of terminals Open – pitch 5.08 mm

Max. power consumption K-bus 24 V 1.9 W

Max. power consumption K-bus 5 V 0.4 W

Product features

• Up to 8 digital inputs

• 8 digital 2 A outputs

• 2 digital inputs with interrupt

• Short-circuit detection

• Permanently short-circuit proof

• Electronic rating plate

Short description

The DM 27x/A series is a digital input/output module of the KeConnect C2 product line and enables the

connection of 6 or 8 digital inputs and 8 digital outputs. 24 V DC control signals are captured by the

digital inputs and transmitted galvanically isolated to the higher-level automation device. In addition, two

of the digital inputs can be used as interrupt inputs.

The digital outputs switch the 24 V DC control signals of a CPU module galvanically isolated from the

connected actuators. In addition to the short-circuit connection, outputs that cause short circuits can be

switched off individually.

This module is attached directly to a CPU module or can be operated with all KEBA controls by means of a

bus coupler.

Digital inputs

DM 272/A DM 276/A

Number / wiring of inputs 8x sink 6x source

Input type Type 1 (acc. to EN 61131-2)

Voltage range for “1” 15 V ≤ UH ≤ 30 V

Voltage range for “0”-3 V ≤ UL ≤ 5 V

Debouncing Configurable 1 ms, 100 ms

Cycle time 1 ms

Status display Green LED

Galvanic isolation Yes, electric strength 707 V with isolated ground connection

Digital outputs

DO 242/B DO 272/A

Number of outputs 8 14

Nominal voltage 24 V DC

Processing time 1 ms

Nominal current of digital outputs 2 A at 50 % simultaneity

Galvanic isolation Yes

Status display Orange LED

Protection facility Short-circuit protection

Max. inductive load 1 J at max 0.2 HzC

Dimensions, weight

Height 120 mm

Width 22.5 mm front plate / 32.5 mm incl. plug

Depth 100 mm

Weight 130 g

Environmental conditions

Operating temperature +5 °C … +55 °C

Storage temperature-40 °C … +70 °C

Relative air humidity 10 % to 95 % (non-condensing)

Vibration resistance / shock resistance Acc. to EN 61131-2

General

DO 242/B DO 272/A

Supply voltage 24 V DC from front (nominal voltage tolerance: 19.2 V … 30 V, acc. to EN 61131-2)

24 V DC from K-bus, 5 V DC from K-bus

Overvoltage category II

Protection class III acc. to EN 61131-2

Addressing on K-bus Via 16-digit address switch, on the side

Type of terminals Open – pitch 5.08 mm

Displays on the front plate 16 signal status LEDs

Max. power consumption K-bus 24 V 2.1 W 2.1 W

Max. power consumption K-bus 5 V 0.4 W 0.4 W

Product features

• 8 or 14 digital outputs

• Short-circuit detection and diagnosis

• Permanently short-circuit proof

• Current load capacity 2 A at 50 % simultaneity

• Fast shutdown function for inductive loads

• Electronic parameter chip

Short description

Digital output modules DO 242/B and DO 272/A enable the connection of up to 14 digital outputs. The

digital outputs switch the 24 V DC control signals of a central module galvanically isolated from the

connected actuators and are designed for a load of up to 2 A at 50 % simultaneity.

The modules are equipped with a fast shutdown function that enables a rapid shutdown of inductive

loads, e.g., hydraulic valves. Machine processes can thereby be accelerated and productivity increased.

The operational safety is ensured by the permanent short-circuit protection of the outputs. Should a short

circuit occur, it is detected and reported to the control module.

These modules are attached directly to a CPU module or can be operated with all KEBA controls by means

of bus couplers.