Page 271 - Motor_protection_and_control_Manual_motor_starters_ contactors

Star-delta starters protected by overload relays

With AF contactors - Open type version in kit form
Wiring diagrams with CT-ERS.21S timer

Star-delta starters
Power circuit AC or DC local control with CT-ERS.21S timer
KM3:5/L3
Us
A
RESET 95
M
STOP 96 FR1
1/L1 3/L2 5/L3 1/L1 3/L2 5/L3 1/L1 3/L2 5/L3
A1 A1 A1
KM1 KM3 KM2
A2 A2 A2 .3
2/T1 4/T2 6/T3 2/T1 4/T2 6/T3 2/T1 4/T2 6/T3 KM1 I
.4
A
RESET .3
M 95 97 KM2 15 A1
FR1 .4 KT1 CT-ERS.21S 5
TEST 96 98 16 A2 With VM
STOP 2/T1 4/T2 6/T3
With 01 01 21 21
VEM4 (2) (2) KM2 22 KM3 22
W1 W2 A1 KM3 A1 A1 KM2
V1 V2 KM1 A2 KM3 A2 (1) A2 KM2 A2 A2
U1 U2

Us
N
W1 W2 KM3:3/L2
V1 V2 L ∆ (3) Y
U1 U2

AC or DC remote control with CT-ERS.21S timer
KM3:5/L3
Us
A
RESET 95
M
STOP 96 FR1
0

.3
KM1 I
.4
.3
KM2 15 A1
.4
KT1 CT-ERS.21S
16 A2
With VM
With 01 01 21 21
VEM4 (2) (2) KM2 KM3
22 22
A1 A1 A1
KM1 KM3 KM2 KM3 KM2
A2 A2 (1) A2 A2 A2

Us
N

KM3:3/L2
L ∆ (3) Y

Note: - VEM4 = VM4 (1) + VE4 (2) with A2-A2 (3) connection
(Except for coil Uc 12-20 V DC : use VM4 with CA4).
- coil Uc 12-20 V DC : A1+, A2-
1SBC101957S0201

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