Crydom DRA Series Contactors - Manual

Rev: 050911
DC Motor Reversing Contactors
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
Please read all installation instructions before using DRA Series DC Motor Reversing Contactors.
TO INSTALL ON DIN RAIL
fig. 1 Mounting/Dismounting contactor on DIN rail.
TO REMOVE FROM
DIN RAIL
PART NUMBER NOMENCLATURE
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.
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 mm
2 ), 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 mm
2 ), 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).
DRA Series Contactors
12 100 D DRA 4D
Series
Operational Voltage Range
100: 1-100 VDC
250: 1-250 VDC
Operational Current
6: 6 Amps/¼ HP @ 180 VDC
(250 suffix only)
12: 12 Amps/¼ HP @ 90 VDC
(100 suffix only)
Control Voltage
D: 5 VDC
E: 24 VDC
Function
4D: H-Bridge