Is_drc_dc_2, Wiring diagram, Derating curve – Crydom DRA Series Contactors User Manual

Page 2: Warning, Danger

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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.

HAZARD OF ELECTRIC SHOCK,

EXPLOSION OR ARC FLASH

Turn off power supply before

working on this equipment.

Failure to follow these instructions
will result in death or serious injury.

DANGER

Rev: 050911

WIRING DIAGRAM

+

M1

-

M2

+ -

S1

S2

F

R

+

-

-

S1

Open

Closed

Open

Closed

S2

Open

Open

Closed

Closed

Forward

Off

On

Off

Off

Reverse

Off

Off

On

Off

Input/Output

1

2

3

4

5

6

7

8

9

10

S1 switch

S2 switch

FWD Direction

c

e

s

m

0

2

c

e

s

m

0

2

REV Direction

20 msec

interlock

TIME DIAGRAM

(C)

(C, F)

(D)

(D)

(E)

(E)

(F)

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

fig. 3

Wiring Diagram for

DC Motor Reversing Contactor.

DERATING CURVE

(A)

(A,B)

fig. 2

Derating Curve for

DC Motor Reversing Contactor.

0.0

2.0

4.0

6.0

8.0

10.0

12.0

Lo

ad

C

urr

en

t (

Am

ps

)

Ambient Temperature (°C)

DRA4D100x12

0

10

20

30

40

50

60

DRA4D250x6

Temp.

40°C

¼ HP 4 FLA @ 90 VDC

60°C

¼ HP 3 FLA @ 90 VDC

¼ HP 2 FLA @ 180 VDC

¼ HP 1 FLA @ 180 VDC

DRA4D100x12

DRA4D250x6

6

6

(B)

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