ABB AF range contactors Application Information

Appli cation descr iption

AF range contactors / CP-C, -S, -E, -T range power supply units

Primary switch mode power supply units for supplying contactors with electronic coil

The following table shows which of our power supply units can safely switch-on and operate each size of ABB contactor with electronic coil.

Assignment of the devices under the following conditions:

The power supply units have been loaded with contactors only. There was no additional load. The contactors have been actuated in cold state or after thermally built-up hold power. The single-phase power supply units have been tested on the primary side with 115 and 230 V AC. The three-phase power supply units have been tested on the primary side with 400 V AC. The secondary voltage was in both cases 24 V DC.

Co-ordination parameters

Average pick-up current of the contactors ≈ Max. load operating point of the power supply units Ambient temperature range: 0...70 °C Switching frequency: 120/h Mounting position of the contactors: horizontal Wire length: 2 x 2.5 m Cross section: 1.5 mm²

Result / Co-ordination table

CP-T 24/5.0

CP-E 24/5.0

Max. load operating point of the power supply units (A)

CP-C 24/10.0

CP-S 24/10.0

CP-T 24/10.0

CP-E 24/10.0

CP-C 24/20.0

CP-S 24/20.0

CP-T 24/20.0

CP-E 24/20.0

CP-T 24/40.0

AF-45 AF-50 AF-63

AF-75

AF-95

AF-110

AF-145

AF-185

Type of contactor

Operating range of the coil

20...60

(V)

Average pick-up power of the

190 7,9

400 16,7

500 20,8

CP-S 24/5.0

CP-C 24/5.0

coil (W)

at 24V DC

7,3 7,3 6,4 6,0 12,3 12,3 13,5 13,0 22,5 22,5 25,0 25,0 45,0

Average pick-up current (A)

x(*1 x(*1 n.a n.a x x x x x x x x x

n.a n.a n.a n.a n.a n.a n.a n.a x x x x x

AF-210

AF-300

AF-400

AF-460

AF-580

AF-750

Note (*1

520 21,7

990 41,2

24...60

950 39,6

The pick-up current of the contactors exceeds the max. load operating point of the power supply units CP-

C 24/5.0 and CP-S 24/5.0 slightly (8%). Due to the sufficient acceleration of the mechanical parts inside

the contactor during the pick-up phase, the co-ordination of the units is nevertheless guaranteed.

n.a n.a n.a n.a n.a n.a n.a n.a x x x x x

n.a n.a n.a n.a n.a n.a n.a n.a n.a n.a n.a n.a x

Example of supply of the contactor AF-750

Fig. 1: Functioning supply with power supply unit CP-T 24/40.0

Fig. 2: Critical supply with power supply unit CP-T 24/20.0

Fig. 3: Non functioning supply with power supply unit CP-T 24/10.0

2 2 CDC113031D010 1