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IMPULSE•G+Mini Advanced Instruction Manual – March 2014
6-11
Power Section Check
Power Off Checks
To perform a power section check, remove the drives main and control wiring from the terminal
strips. Obtain reading as specified in the table on the next page, and ensure that the reading falls
within the normal reading range.
Test equipment - Analog Ohmmeter set R x 1 scale or digital multimeter set to the diode check.
WA R N I N G
Do NOT touch any circuit components while AC main power is on or immediately after the main
AC power is disconnected from the unit. You must wait until the red “CHARGE” lamp is
extinguished. It may take as long as 10 minutes for the charge on the main DC bus capacitors to
drop to a safe level. Failure to adhere to this warning could result in serious injury.
Device
VOM (on Rx1 Scale)
Normal Reading
(Analog Meter)
Normal Reading
(Digital Meter)
Positive Lead
Negative Lead
Input Rectifier
Bridge
*1
L1
+
7–100
Approximately
0.5 V
L2
+
L3
+
–
L1
–
L2
–
L3
L1
–
Infinite
OL Displayed
L2
–
L3
–
+
L1
+
L2
+
L3
Bus
Capacitors
+
–
Observe gradually increasing
resistance
Observe gradually increasing voltage
to OL
Pre-charge
Resistor
–
Across the Resistors
100
or less
–
Output
Transistors
*2
*3
T1
+
7-100
Approximately
0.5V
T2
+
T3
+
–
T1
–
T2
–
T3
T1
–
Infinite
OL Displayed
T2
–
T3
–
+
T1
+
T2
+
T3
Braking Diode
B2
B1
10
0.5 V
B1
B2
Infinite
OL Displayed
B2
–
Infinite
OL Displayed
–
B2
Infinite
0.5 V
*1. “+” could be any one of three (+) terminals which are labeled as Å1, Å2, and Å3.
*2. If the bus fuse is blown you must install a jumper across the fuse terminals to get accurate resistance measurements.*3.
*3. If the pre-charge resistor is open, you will read infinite W b and any output terminal unless you install a temporary jumper across the resistor.
Содержание 2001-G+M
Страница 2: ......
Страница 9: ...C h a p t e r 1 Introduction...
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Страница 17: ...C h a p t e r 2 Installation...
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Страница 25: ...C h a p t e r 3 Wiring...
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Страница 39: ...C h a p t e r 4 Getting Started...
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