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B&R X20MM4455

I/O module, 4-channel PWM motor bridge

MPN: X20MM4455
Category: Motor controllers

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12-month warranty (new) · 3-month (used/refurbished)
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What is the B&R X20MM4455?

4x outputs (H bridge) with PWM control and 24 to 48 VDC ±25% supply

6 A nominal current (10 A max. current)

15 Hz to 50 kHz frequency, 16-bit

PWM resolution, 15-bit + sign, minimum 10 ns

Configurable dither

12 inputs 5 V, configurable for AB and ABR incremental encoders

2x 5 V encoder supply with up to 200 mA

Source connection of digital inputs for encoder's open collector outputs

1-wire connections

The PMW motor bridge module is used to control 4 DC motors with a nominal voltage of 24 to 48 VDC ±25% at a nominal current up to 6 A.

Specifications

Short description

I/O module

4-channel PWM motor bridge, 4 ABR incremental encoders

General information

Diagnostics – Module run/error	Yes, using LED status indicator and software
Diagnostics – Output	Yes, using LED status indicator and software
Diagnostics – Encoder power supply	Yes, using LED status indicator and software
Diagnostics – I/O power supply	Yes, using software
Power consumption – 24 VDC	3.3 W / channel
Power consumption – 48 VDC	4.7 W / channel
Power consumption – 60 VDC	5.4 W / channel
Power consumption – 24 VDC	2.1 W / channel
Power consumption – 48 VDC	2.4 W / channel
Power consumption – 60 VDC	2.6 W / channel
Power consumption – 24 VDC	2 W / channel
Power consumption – 48 VDC	2.1 W / channel
Power consumption – 60 VDC	2.2 W / channel
Power consumption – Bus	0.01 W
Power consumption – Internal I/O	2.4 W (note: Power consumption without encoder power supply)
Certifications – CE	Yes
Certifications – UKCA	Yes
Certifications – CRA (Cyber Resilience Act)	In preparation
Certifications – ATEX	Zone 2, II 3G Ex nA nC IIA T5 Gc; IP20, Ta (see X20 user's manual); FTZÚ 09 ATEX 0083X
Certifications – UL	cURus E225616; Power conversion equipment
B&R ID code	0xE8A4
Status indicators	I/O function per channel, operating state, module status
Additional power dissipation caused by actuators (resistive) [W]	-

Encoder power supply

Quantity	2
Output voltage	5 VDC (note: The 5 VDC is formed from the internal I/O power supply.)
Output current	Max. 200 mA each
Short-circuit proof, overload protection	Yes

Digital inputs

Input filter – Hardware	<1 µs
Input filter – Software	-
Switching threshold – Low	<2 V
Switching threshold – High	>3 V
Quantity	12
Nominal voltage	5 VDC, asymmetrical (single-ended)
Input circuit	Source
Connection type	1-wire connections
Input resistance	Typ. 2.7 kΩ
Additional functions	4x ABR incremental encoder
Insulation voltage between channel and bus	500 V eff

ABR incremental encoder

Quantity	4
Encoder inputs	5 VDC, asymmetrical (single-ended)
Counter size	16-bit
Input frequency	Max. 100 kHz
Evaluation	4x
Signal form	Square wave pulse

PWM output

Actuator power supply – Supply	External
Actuator power supply – Fuse	Required line fuse: Max. 32 A slow-blow (see "Overcurrent protection")
PWM pulse width – PWM mode	15 bits plus sign ≥10 ns
PWM pulse width – Current mode	15 bits plus sign ≥10 ns
Quantity	4
Nominal voltage	24 to 48 VDC ±25% (note: The tolerance value is composed of the voltage tolerances and permissible total AC voltage component with a peak value of 5% of the rated voltage.)
Nominal current	6 A
Maximum current	10 A (2 s)
PWM frequency	15 Hz to 50 kHz
Output protection	Thermal shutdown in the event of overcurrent or short circuit
Variant	H bridge
Configurable dither	Amplitude, frequency
Period duration resolution	16-bit, min. 20 μs
Phase shift PWM1, 2, 3, 4	90° each
DC bus capacitance	680 μF
Insulation voltage between channel and bus	500 V eff

Electrical properties

Electrical isolation

Channel isolated from bus; Channel not isolated from channel

Operating conditions

Mounting orientation – Horizontal	Yes
Installation elevation above sea level – 0 to 2000 m	No limitation
Installation elevation above sea level – >2000 m	Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529	IP20

Ambient conditions

Temperature – Horizontal mounting orientation	0 to 50°C
Temperature – Vertical mounting orientation	Not permitted
Temperature – Derating	-
Temperature – Storage	-25 to 70°C
Temperature – Transport	-25 to 70°C
Relative humidity – Operation	5 to 95%, non-condensing
Relative humidity – Storage	5 to 95%, non-condensing
Relative humidity – Transport	5 to 95%, non-condensing

Mechanical properties

Note	Order 2x terminal block X20TB12 separately. ; Order 1x terminal block 0TB3103-7020 separately.
Pitch	87.5 +0.2 mm

Accessories

Required accessories (order separately)

X20TB12	Terminal blocks — Tool-free wiring with push-in technology; Simple wire release using lever; Ability to label each terminal; Plain text labeling also possibl…
0TB3103-7020	Terminal blocks — The single row, 3-pin terminal block 0TB3103 is used for making the connection to the X20 motor module MM4456 and other devices.

Downloads & documentation

Official documents from B&R, downloaded directly from the manufacturer.

Data sheets & manuals

CAD & dimension drawings

3D File STEP X20MM445xZIP · 995 KB · 1.20 (03/21/2017)

Certificates (5)

X20MM4455: frequently asked questions

When can X20MM4455 be shipped?

X20MM4455 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up X20MM4455 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for X20MM4455 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for X20MM4455, subject to availability and destination.