Danfoss MCI 3, MCI 15, MCI 25, MCI 30 I-O, MCI 40-3D I-O Data sheet

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Data sheet

CI-tronic™ Soft start motor controller

MCI 3, MCI 15, MCI 25, MCI 30 I-O, MCI 40-3D I-O and MCI 50-3 I-O

The MCI soft starters are designed for soft starting and stopping of 3 phase AC motors, thus reducing the inrush current and eliminating the damaging effects of high starting torque surges.

The digitally controlled soft starter features accurate settings and easy installation. The controller has individually adjustable acceleration and deceleration times.

Thanks to the adjustable initial torque and the unique breakaway (kick start) function the soft starter can be optimized for almost any application.

The MCI soft starters are typically used on motor applications where a smooth start and/or stop is advantageous, such as conveyors, fans, pumps, compressors and high inertia loads. MCI soft starters are also obvious as replacement for star/delta starters.

Features	•	Motor load max. 50 A
	•	Acceleration times adjustable:
		0	– 10 seconds, MCI 3, MCI 15 and MCI 25
		0	– 20 seconds, MCI 30 I-O
		0	– 30 seconds, MCI 40-3D I-O, MCI 50-3 I-O
	•	Deceleration times adjustable:
		0	– 10 seconds, MCI 3, MCI 15, and MCI 25
		0	– 20 seconds, MCI 30 I-O
		0	– 60 seconds, MCI 40-3D I-O, MCI 50-3 I-O
	• Initial torque adjustable up to 85%
	• Breakaway function (kick start)
	•	Universal control voltage:
		24 – 480 V AC / DC

•Automatic detection of missing phases

•Automatic adaptation to 50/60 Hz

•Optional auxiliary contacts

•LED Status indication

•Unlimited start/stop operations per hour

•Built in varistor protection

•Compact modular design

•DIN rail mountable

•EN 60947-4-2

•CE and CULUS (UL 508)

•EAC and LLC approved

IC.PD.C50.A7.02 | 1

Data sheet | CI-tronic™ Soft start motor controller, Type MCI 3, MCI 15, MCI 25, MCI 30 I-O, MCI 40-3D I-O and MCI 50-3 I-O

Adjustments

Motor torque	Ramp-up time	Ramp-down time
(voltage)

Kick start selectable

Time

Adjustable starting torque

Selection guide
Selection guide		Operational	Motor	Motor power	Module
		Operational	current	Motor power	Module
	Type	voltage	current	max.	dimensions	Aux. contacts	Code no.
	Type	voltage	max.	max.	dimensions	Aux. contacts	Code no.
			max.
		[V AC]	[A]	[kW / HP]	[mm]
	MCI 15	208 – 240	15	4.0 / 5.5	45	–	037N0037
	MCI 25	208 – 240	25 (30) 1)	11 / 15 1)	90	I–O, bypass	037N0069
	MCI 50–3 I–O	208 – 240	35 (50) 1)	15 / 20 1)	180	I–O, bypass	037N0089
	MCI 3	380 – 415	3	1.5 / 2	22.5	–	037N0074
	MCI 3	440 – 480	3	1.5 / 2	22.5	–	037N0084
	MCI 15	380 – 480	15	7.5 / 10	45	–	037N0039
	MCI 25	380 – 480	25	11 / 15	90	–	037N0040
	MCI 30 I–O	380 – 480	25 (30) 1)	15 / 20 1)	90	I–O, bypass	037N0070
	MCI 40–3D I–O	380 – 480	29 (43) 1)	21 / 28 1)	90	I–O, bypass	037N0092
	MCI 50–3 I–O	380 – 480	35 (50) 1)	22 / 30 1)	180	I–O, bypass	037N0090
	MCI 15	500 – 600	15	7.5 / 10	45	–	037N0041
	MCI 25	500 – 600	25	15 / 20	90	–	037N0042

1) If used with bypass contactor

IC.PD.C50.A7.02 | 2

Danfoss MCI 3, MCI 15, MCI 25, MCI 30 I-O, MCI 40-3D I-O Data sheet

Data sheet | CI-tronic™ Soft start motor controller, Type MCI 3, MCI 15, MCI 25, MCI 30 I-O, MCI 40-3D I-O and MCI 50-3 I-O

Technical data

Output Specification

MCI 3

MCI 15

MCI 25

MCI 30 I-O

MCI 40-3D I-O

MCI 50-3 I-O

30 A

43 A

50 A

Operational current

3 A

15 A

25 A

(if bypassed during

max.

steady state)

Motor size at:

208 – 240 V AC

0.1 – 0.7 kW (0.18 – 1 HP)

0.1 – 4.0 kW (0.18 – 5.5 HP)

0.1 – 7.5 kW (0.18 – 10 HP)

0.1 – 11 kW (0.18 – 15 HP)

–

0.1 – 15 kW (0.18 – 20 HP)

380 – 480 V AC

0.1 – 1.5 kW (0.18 – 2 HP)

0.1 – 7.5 kW (0.18 – 10 HP)

0.1 – 11 kW (0.18 – 15 HP)

0.1 – 15 kW (0.18 – 20 HP)

0.1 – 21 kW (0.18 – 28 HP)

0.1 – 22 kW (0.18 – 30 HP)

500 – 600 V AC

0.1 – 2.2 kW (0.18 – 3 HP)

0.1 – 7.5 kW (0.18 – 10 HP)

0.1 – 15 kW (0.18 – 20 HP)

0.1 – 18.5 kW (0.18 – 25 HP)

–

0.1 – 30 kW (0.18 – 40 HP)

Leakage current max

5 mA

Min. operational current

50 mA

Overload relay trip class

Class 10

Semiconductor

protection

Type 1 co-ordination

25 A gL/gG 72 A2s

50 A gL/gG 1800 A2s

80 A gL/gG 6300 A2s

125 A gL/gG 25300 A2s

Type 2 co-ordination

I2 t (t = 10ms)

Rating index:

AC-53a

–

15A: AC-53a: 8-3:

25A: AC-53a: 6-5:

29A: AC-53a: 6-5:

35A: AC-53a: 6-6:

Asynchronous motors

100-3000

100-480

100-120

AC-53b Asynchronous

3A: AC-53b: 5-5: 10

–

30A: AC-53b: 5-5: 30

43A: AC-53b: 5-5: 30

50A: AC-53b: 6-6: 30

motors with bypass

AC-58a Hermetic

15A: AC-58a: 6-6:

25A: AC-58a: 6-6:

refrigeration

–

100-3000

100-480

compressors

Control Circuit Specifications

Control voltage range

24 – 480 V AC / DC

Pick-Up voltage max.

20.4 V AC / DC

Drop-out voltage min.

5 V AC / DC

Max. control current for

1 mA

no operation

Control current /

15 mA / 2 VA

Power max.

Response time max.

70 ms

Ramp-up time

adjust. from 0 – 10 seconds

0 – 20 seconds

0 – 30 seconds

Ramp-down time

adjust. from 0 – 10 seconds

0 – 20 seconds

0 – 60 seconds

Initial Torque

adjust. from 0 – 85% of nominal torque with optional kick start

SCR Aux. contacts, opt.

voltage/current max.

24 – 480 V AC / 0.5 A

24 – 480 V AC / 1.0 A

(AC-14, AC-15)

Fuse max. I2t (t = 10ms)

10 A gL/gG, I2t max. 72 A2s

EMC immunity and

Meets requirements of EN 60947-4-2

emission

Insulation

Rated installation voltage, Ui

660 V AC

Rated impulse withstand

4 k

voltage, Uimp V

Installation Category

III

Thermal specifications

MCI 3

MCI 15

MCI 25

MCI 30 I-O

MCI 40-3D I-O

MCI 50-3 I-O

Power dissipation 1),

4 W

2 W/A

3 W/A

continuous duty max.:

Power dissipation 1),

4 W

2 W/A x duty cycle

3 W/A x duty cycle

Intermittent duty max.:

Ambient temperature

-5 °C – 40 °C

range

Cooling method

Natural convection

Mounting

Vertical +/- 30°

Max. ambient temperature

60 °C, see derating for high temperatures in chart page 7

with limited rating

Storage temp. range

-20 °C – 80 °C

Protection degree /

IP20 / IP3

IP10 / IP3

pollution degree

Materials

Housing

Self extinguishing PPO UL94V1

Heatsink

Aluminum black anodized

Base

Electroplated steel

1) If used without a bypass contactor

IC.PD.C50.A7.02 | 3

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