Operating Instructions ACU
7.5 Connection by size
7.5.1 Sizes 1 and 2: ACU 201 (up to 3.0 kW) and 401 (up to 4.0 kW)
Frequency inverters are connected to mains via plug-in terminal X1. The motor and braking resistor
are connected to the frequency inverter via plug-in terminal X2. IP20 ingress protection rating
(EN60529) is only guaranteed with the terminals plugged.
Disconnect the frequency inverter from mains voltage and protect it against being
energized unintentionally.
Verify safe isolation from power supply.
Work on the device may only be started once the DC link capacitors have discharged.
The time to wait is at least 3 minutes in the case of sizes 1 and 2.
When the frequency inverter is disconnected from power supply, the mains, DC-link
voltage and motor terminals may still be live for some time.
Switch off power supply before connecting or disconnecting the keyed plug-in
terminals X1 and X2 .
Mains connection ACU 201 (up to 3.0 kW) and 401 (up to 4.0 kW)
With a mains current above 10 A, the mains power connection 230 V 1ph/N/PE and the
mains power connection 230 V 2ph/N/PE are to be done on two terminals.
X1
1ph / 230V AC
+
-
L1
L2 L3L1
N PE
3ph / 230V AC
3ph / 400V AC
+
-
L1
L2 L3L1
L2 L3 PE
2ph / 230V AC
+
-
L1 L2 PE
L2 L3L1
250 W ... 1.1 kW
Phoenix ZEC 1,5/ .. ST7,5
0.2 ... 1.5 mm
AWG 24 ... 16
2
0.2 ... 1.5 mm
AWG 24 ... 16
2
0.25 ... 1.5 mm
AWG 22 ... 16
2
0.25 ... 1.5 mm
AWG 22 ... 16
2
2ph / 230V AC1ph / 230V AC
1.5 kW ... 3.0 kW
L1 N PE
+
- L1 L2 L3L1
3ph / 230V AC
3ph / 400V AC
PE
1.5 kW ... 3.0 kW 1.5 kW ... 4.0 kW
+
-
L1 L2 L3L1
L1 L2 PE L1
+
-
L1 L2 L3L1
L2 L3
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