DRA Series Contactors PART NUMBER NOMENCLATURE DC Motor Reversing Contactors DRA series DC Motor Reversing Contactors utilize Crydom’s advanced solid state DC switching technology to provide an integrated “H Bridge” type DC switching contactor for DC motor reversing applications. These ready-to-use contactors feature logic compatible DC input control with status indicator and interlock and provide a simple and easy to use control solution for DC motor reversing. For complete specifications, see DRA Series DC Motor Reversing Contactors datasheet at www.crydom.com. FEATURES 54 mm motor reversing DIN rail mountable contactor package 90 VDC & 180 VDC Operating Voltage 5 to 15 VDC & 15 to 32 VDC Input Control Voltage options available Convenient FET switches in H-bridge configuration for Motor Reversing applications Protective Forward/Reverse interlock built-in function UL ratings for Resistive & Motor loads LED Status indicator for Input Control Voltage No heat sink required & cage style screw terminals for easy installation & reliable wire connection INSTALLATION INSTRUCTIONS Operational Voltage Range 100: 1-100 VDC 250: 1-250 VDC Series DRA 4D 100 Function 4D: H-Bridge D Operational Current 6: 6 Amps/¼ HP @ 180 VDC (250 suffix only) 12: 12 Amps/¼ HP @ 90 VDC (100 suffix only) 12 Control Voltage D: 5 VDC E: 24 VDC TO REMOVE FROM DIN RAIL Please read all installation instructions before using DRA Series DC Motor Reversing Contactors. Install the contactor on the DIN rail as shown in fig. 1. Vertical mounting operation is recommended. Wire the contactor to the input control side following the wiring diagram (fig. 3). 24 AWG minimum, 12 AWG maximum (IEC 0.5-2.5 mm2), choose wire gauge according to load current. Maximum recommended terminal screw torque input 4.3 lbs in (0.5 Nm). Wire the contactor to the DC Line side (+ & -) and to the Load side (M1 & M2). 24 AWG minimum, 12 AWG maximum (IEC 0.5-2.5 mm2), choose wire gauge according to load current. Maximum recommended terminal screw torque output 4.3 lbs in (0.5 Nm). If multiple units are installed be sure to follow derating curve (fig. 2). TO INSTALL ON DIN RAIL fig. 1 Mounting/Dismounting contactor on DIN rail. Rev: 050911 WIRING DIAGRAM (C, F) DERATING CURVE (A,B) 12.0 DRA4D100x12 DRA4D250x6 Load Current (Amps) 10.0 (E) 8.0 6.0 S1 fig. 2 Derating Curve for DC Motor Reversing Contactor. 4.0 + - 2.0 S2 F R 0.0 + - (D) 0 10 20 30 40 50 60 Ambient Temperature (°C) Temp. 40°C 60°C (A) (B) (C) (D) (E) (F) + M1 M2 DRA4D100x12 ¼ HP 4 FLA @ 90 VDC ¼6 HP 3 FLA @ 90 VDC DRA4D250x6 ¼ HP 2 FLA @ 180 VDC ¼6 HP 1 FLA @ 180 VDC Unless otherwise noted, all ratings are at 0 mm air gap for adjacent similar parts. Resistive Load Current rating for DRA4D250x6 is 5.5 A @ 0 mm air gap. For maximum ratings use 45 mm air gap No grounding wire required. DC inductive loads must be diode suppressed 3 Input control terminal screws M2.5 Slotted Drive 4 Output terminal screws (+ & -/M1 & M2) M2.5 Combo Drive Minimum wire strip length 0.197 in [5 mm], maximum 0.235 in [6 mm] for input and output terminals WARNING RISK OF MATERIAL DAMAGE AND HOT ENCLOSURE • The product's side panels may be hot, allow the product to cool before touching. • Follow proper mounting instructions including torque values. • Do not allow liquids or foreign objects to enter this product. Failure to follow these instructions can result in serious injury, or equipment damage. DANGER S1 Open Closed Open Closed S2 Open Open Closed Closed Input/Output 1 2 3 Reverse Off Off On Off TIME DIAGRAM 4 5 fig. 3 Wiring Diagram for DC Motor Reversing Contactor. 6 7 8 9 10 S1 switch S2 switch HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH FWD Direction • Turn off power supply before working on this equipment. REV Direction Failure to follow these instructions will result in death or serious injury. Forward Off On Off Off 20 msec 20 msec 20 msec interlock Rev: 050911