Component Identification And Specification; General Description; Power Supply; Description Of Power Terminals - gefran SM32 Bedienungshandbuch

2. Component Identification and Specification

2.1. General Description

SM32 is a half-controlled three phase AC/DC converter for supplying DC-Link volt-
age to a series of AC Drives, with C and D terminals parallel connected.
The precharge of the drive capacitors (time setting set via dip-switches) is done
by partializing the mains voltage via a thyristors bridge. A diagnostic circuit allows
detection of a mains power supply dip for system use.
The direct parallel connection of the outputs (U2,V2,W2 terminals) of two or more
inverters is not possible !
Caution

2.2. Power Supply

SM32 converter can be connected to the three phase power supply having the
following characteristics:
•
•
The maximum input power of the internal switching power supply is 100W, and the
supplied voltages are:
•
•

2.3. Description of Power Terminals

Terminals
U, V, W

2.4. Description of Control Terminals

Terminals
28
400V -15%
50 or 60 Hz
±5V 500mA
+24V 2A
Power supply via AC mains, 3Ph (400V –15% up to 480V +10%)
C
D Negative terminal to be connected to the inverter DC-Link
U3, V3 Supply for internal fan (only for 1050A size and higher), 1ph, 230V ± 15%)
23 Input of the precharge enable control
32 Output of the MLP static signal (low - active signal)
33 (Common) Ground of the MLP and ML static signals
34 Reference point for Power supply +24V
35 Power supply output +24V
36 Output of the ML signal (low - active signal)
37 Power supply of the ML and MLP signals
52 (Common) Ground of the precharge enable control
SM32 • Instruction manual
up to 480V +10%
(Dip-switch selectable).
Control card
Fan power supply (if present) and auxiliary func-
tions (regulator terminals power supply).
Function
Positive terminal to be connected to the inverter DC-Link
Function Voltage, Current
(15 - 35V, 5 - 11mA)
(5 ... 35V, 20mA source)
-
-
(32V / 300mA max)
(5 ... 35V, 20mA max sink)
(35V max)
-