SECTION 5 - CONTROL COMPONENTS
3121222
– JLG Lift –
5-9
1. RESISTANCE >100K OHMS ALL TERMINALS TO
HOUSING.
Ensure that there is an open-circuit between all
terminals of the Power Module and the module's
aluminum housing. The device is fully potted
and all electronics are insulted from the housing.
Place the Black meter lead on the housing and
use the Red meter lead to probe all terminals.
2. RESISTANCE < 2 OHMS BB AND M1.
Ensure that there is a short-circuit between the
+B and M1 Terminals. Internally, there is a low-
impedance current measurement shunt for the
Armature portion of Traction. Place the Red
meter lead on +B, and the Black meter lead on
M1.
3. RESISTANCE >1M OHMS BETWEEN F1 AND -B;
F2 AND -B.
Ensure that there is an open-circuit between the
two Field Terminals (F1 & F2) and -B. Internally,
there are MOSFET transistors between these ter-
minals that should be high-impedance when the
module is un-powered. Place the Black meter
lead on -B and the Red meter lead on F1 / F1.
4. RESISTANCE >1M OHMS BETWEEN F1 AND
+B; F2 AND +B.
Ensure that there is an open-circuit between the
two Field Terminals (F1 & F2) and +B. Internally,
there are MOSFET transistors between these ter-
minals that should be high-impedance when the
module is un-powered. Place the Black meter
lead on +B and the Red meter lead on F1 / F1.
5. RESISTANCE >100K OHMS BETWEEN P AND -
B.
Ensure that there is an open-circuit between the
P and the -B Terminals. Internally, there are MOS-
FET transistors between these terminals that
should be high-impedance when the module is
un-powered. Place the Black meter lead on -B,
and the Red meter lead on P. Note that a mea-
surement of increasing resistance (capacitor
charge) is normal, but a persistently low imped-
ance is not.
6. RESISTANCE >1K OHMS BETWEEN M2 AND -B.
Ensure that there is an open-circuit between the
M2 and -B Terminals. Internally, there are MOS-
FET transistors between these terminals that
should be high-impedance when the module is
unpowered. Place the Black meter lead on -B,
and the Red meter lead on M2. Note that a mea-
surement of increasing resistance (capacitor
charge) is normal, but a persistently low imped-
ance is not.
7. RESISTANCE 120 OHMS BETWEEN PINS 10 &
11.
Ensure that the resistor that terminates the CAN-
bus is within tolerance between pins 10 and 11
on the 12 position Mini-Fit Jr (Connector "B").
Place the Red meter lead on pin 10, and the
Black meter lead on pin 11. The resistance
should measure between 110 - 130 Ohms.
Summary of Contents for 1230ES
Page 1: ...AS NZS Service and Maintenance Manual Model s 1230ES P N 3121222 June 22 2017 ...
Page 2: ...NOTES ...
Page 24: ...SECTION 1 MACHINE SPECIFICATIONS 1 12 JLG Lift 3121222 NOTES ...
Page 32: ...SECTION 2 GENERAL SERVICE INFORMATION 2 8 JLG Lift 3121222 NOTES ...
Page 78: ...SECTION 4 BASE COMPONENTS 4 40 JLG Lift 3121222 NOTES ...
Page 104: ...SECTION 5 CONTROL COMPONENTS 5 26 JLG Lift 3121222 NOTES ...
Page 158: ...SECTION 8 DIAGNOSTIC TROUBLE CODES 8 22 JLG Lift 3121222 NOTES ...
Page 198: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 40 JLG Lift 3121222 ...
Page 199: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 3121222 JLG Lift 9 41 ...
Page 200: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 42 JLG Lift 3121222 ...
Page 202: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 44 JLG Lift 3121222 NOTES ...
