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10 Connection | Application manual: Waste water pump | 1SFC132104M0201 3.2 Control supply and control circuit Wires in industrial control applications are divided into three groups: main power supply, control supply and control circuit. Main power supply (1L1, 3L2, 5L3, 2T1, 4T2, 6T3) Control supply voltage (terminals 1 and 2) Control circuit (terminals 13 - 21). 3.2.1 Control supply voltage - terminals 1 and 2 Connect neutral and phase to terminal 1 and 2. See Figure 4. INFORMATION Only use 100-250 V, 50 / 60 Hz supply voltage. Tightening torques and cable dimensions. 0,2 .. 2,5 mm 2 2x0,2 .. 1,5 mm 2 0,2 .. 2,5 mm 2 2x0,2 .. 1,5 mm 2 AWG 12 ... 24 0,5 Nm 4,3 lb.in 3,5 x 0,6 mm (0.138 x 0.024 in) M3,5 L 100-250V 50/60 Hz K4 K5 K6 Start Stop In0 In1 In2 GND +24V N 1SFC132081M0201 3.2.2 Functional earth - terminal 22 Softstarters type PSTX85...PSTX370 should be earthed using the terminal 22 as shown in Figure 5 (one connection is sufficient). Connect the cable to an earthing point close to the softstarter. The cable should be as short as possible. A suitable earthing point is next to the softstarter on the mounting plate, which should also be earthed. INFORMATION This is not a protective earth, it is a function earth. The earthing cable should be as short as possible. Maximum length 0.5m. INFORMATION Do not use functional earth in IT-networks, commonly found in for instance marine applications. Tightening torques and cable dimensions. 0,2 .. 2,5 mm 2 2x0,2 .. 1,5 mm 2 0,2 .. 2,5 mm 2 2x0,2 .. 1,5 mm 2 AWG 12 ... 24 0,5 Nm 4,3 lb.in 3,5 x 0,6 mm (0.138 x 0.024 in) M3 L 100-250V 50/60 Hz K4 K5 K6 Start Stop In0 In1 In2 DGND GND +24V N 1SFC132081M0201 Figure 4: Supply voltage, terminal 1, 2 4 1SFC132081M0201 Figure 5: Functional earth, terminal 22 5 1SFC132081M0201 2 5