user manual allen bradley
Post on 17-Oct-2015
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Field Loss Light Illuminated
In order to help us provide you with quality support please have the following informationavailable when you call AB Drives Technical Support.
Drives Catalog/Bulletin number (Normally found on the inside of the front cover door)
Fuses 4F and 5F checked for blown condition
Measured field voltage and field current
Motor nameplate information: Field Voltage, Field Current, and Field resistance if given.
Measured Field resistance of the motor. NOTE: A motor problem is indicated if the measuredfield resistance is very high or very low.Field Resistance = Field Voltage/ (Field Current X 1.39)
Motor field connections (F1, F2, F3 , and F4) series or parallel.
Additional Hints:Terminal 1 on the Main Control Board is the field loss input. The minimum dc voltage at terminalwith respect to terminal 24, common, is 0.9 volts dc. If this voltage is not present then eitherthere is no field current flow or Field Loss board is not operating. If the voltage is present butthe field loss is still indicated then the Main Control Board should be replaced.
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Thyristor Over temperature Light Illuminated
In order to help us provide you with quality support please have the following informationavailable when you call AB Drives Technical Support.
Drives Catalog/Bulletin number (Normally found on the inside of the front cover door)
Additional Hints:
Two thermistors, 1Therm and 2Therm, are mounted on the armature scr heatsink assemblies.
The leads from the thermistors are connected to the main control board on terminals 33 and 34for 1Therm and terminals 35 and 36 for 2Therm. The normal resistance of the thermistors is50 K ohms at 25o C and decreases to 2603 ohms at 100o C.If the Thyristor Over temperature fault occurs intermittently a simple test would be to replace thetwo thermistors with 47K ohm, 2 watt resistors across terminals 33-34 and terminals 35-36. Ifthe fault clears and does not reoccur then the thermistors should be replaced. If the problempersists then the Main control board should be replaced.
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Part Description Old Board Part Number New Board Part Number Kit NumberMain Control 12M08-0007 102902 111741
Potentiometer board 12M08-0008 102903 none
Potentiometer board 104201 116184
Relay board 12M08-0005 102899 116185
Field Loss Assembly 12M08-00012 102906 116183
Tach Feedback Board 12M08-00017 102910 102910
Field Bridge Rectifier 5P2-54 101020 Obsolete see below
101024 101024
Fan 103042 103042
Control Transformer Fuse 8P01-0050 101665 101665
600 volt, 1 amp, KTK-R
Field Fuse, 500V, 8P01-146 101751 101751
10 amp, KLM-10
Fault Relay 6P1-00016 101184 101184
Fault Relay Retaining 6P99-0004 101472 101472
Clip
Plug in Relays 6P1-00090 101215 101215
Retaining Clip 6P99-00015 101474 101474
Capacitor, 4MFD 100778 100778
Control Transformer 100840 100840
Surge Suppressors 101063 101063
105 Amp Module 250 Amp Module 345 Amp Module
Line Fuses 101749 101750 101756
Armature SCR 101110 163181 163182
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1379 Spare Parts.pdfPart DescriptionOld Board Part NumberNew Board Part NumberKit NumberField Fuse, 500V,8P01-146101751101751
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