Safety Precautions; Maintenance; Dc-Bus Voltage Check; Test Instruments - Reliance electric GV3000/SE Instruction Manual

Safety Precautions

CAUTION: PC-boards and control inputs of IGBT/IPM modules are static sensitive.
Handle without touching components, connectors or leads.
All tool, equipment and personnel should be grounded during assembling.
Failure to observe this precaution could result in damage to the equipment
Whenever work is done on the unit AC-input power must be disconnected.
DANGER:
After discharging of the DC-bus capacitors (approx. 180 seconds) the DC-bus
voltage should be checked with a voltmeter according to the following instructions.
Failure to observe this precaution could result in bodily injury or loss of life.

DC-Bus Voltage Check

1. Turn OFF and lock out power to the Inverter
2. Before opening the inverter wait the discharge time of the DC-bus capacitors (approx. 180 seconds).
3. Before touching internal life parts verify with a voltmeter, that there is no AC-line voltage applied and
the DC-bus voltage has dropped below DC 50 V. Connect a voltmeter (Range: >650V) to the line
input power terminals L1-L3 and to the DC-bus circuit 47 (+) and 45 (-). On types 024-360 access to
points 47 and 45 only after removing the front housing cover.
DC-bus measuring points for the different inverter types are as follows:
Unit Type Measuring points
003 to 030 DC-Bus output terminals 47 (+) and 45 (-)
and 039/044
038/043 and Input diode cube secondary connections,
058 to 085 see also Figure 4-2a (Pos. 9).
089 to 170 Input diode module secondary bus-bar,
see also Figure 4-2b (Pos. 9).
180 to 360 Fuse holders on the Power Interface card
PIP, accessible after hinging down
Regulator Panel.

Test Instruments

For trouble shooting inside the power unit the following meters are recommended:
a) Either a digital multimeter with a 10 megaOhm input impedance on all ranges (e.g. FLUKE)
or an analog multimeter having a sensitivity of 100 kohm/volt.
b) A two-channel oscilloscope with 100 to 1 probes for potential free differential measuring of
mains, DC-bus or output voltage and a clip-on probe for measuring currents.
Cooling Fan Check
Normally the controllers will work without any maintenance. One exception are the cooling fans on
power units and control cubicles. They should be visually checked from time to time, because the
lifetime is limited. It is recommended to replace the fans before the end of the lifetime to prevent
breakdowns on the machine.
NOTE: Rockwell Automation delivers complete fans only (see spare parts list Tables 4-1 to 4-8).
49'1327 e

4 - MAINTENANCE

GV3000/SE
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X3
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