CookTek MCD3000 Specifications download pdf (Page 9)

MCD3000 Series

8 MG.15.A4.22 - VLT is a registered Danfoss trademark

Installation

Either Relay Output C or Relay Output A can be

programmed to control operation of the bypass

contactor.

Par. 36 Relay A - Function Assignment = 1 (Run)

Par. 38 Relay C - Function Assignment = 0 (Run)

Failure to correctly connect the bypass

contactor (B1-T1, L2,-T2, & B3-T3) will

result in a loss of current based protection

systems possibly leading to a motor failure.

Failure to correctly connect the bypass

contactor (B1-T1, L2,-T2, & B3-T3) may

result in a phase to phase short circuit

causing severe equipment failure .

■ Power wiring - D.C.Brake connection

If the D.C.Braking function is to be used, a contactor

must be wired to short output terminals T2 & T3

during the braking operation. This contactor must be

controlled by the MCD3000 Relay Output C and Relay

Output C must be programmed for D.C.Brake

operation.

• Refer to Par. 18 and 19 for D.C.Brake parameter

adjustments.

• Refer Par. 38 Relay C - Function Assignment.

The MCD3000 power modules will be

damaged if the D.C.Brake contactor is

closed when the D.C.Brake function is not

operating, or if the .D.C.Brake contactor is incorrectly

connected between T1-T2 or T1-T3.

■ Power wiring – Inside delta connection

Models MCD3185 ~ MCD3800 can be connected

inside the delta circuit of the motor when fitted with an

optional Inside Delta Kit.

Soft starters connected within the delta circuit of a

motor control only phase current thereby enabling

them to be used with larger motors than would be

possible with normal line connection. See the

Specifications section of this manual for inside delta

ratings.

K1M

K1M Line Contactor

Legend

Motor

L3B

L1B

3 PHASE

SUPPLY

L2B

ATTENTION

For inside delta connection to be possible

both ends of all three motor windings must be

accessible.

When utilizing the inside delta connection

method voltage remains connected to one

end of the motor windings even when the

soft starter is in the off or tripped state. A

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 49 50

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CookTek MCD3000 Specifications Page 9

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