Instruction manual

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Special Circuit Functions & Modes
6.1 Fault Conditions
The FR1000-000, FR3500-000 Field Regulator Unit has two fault modes. One is
ARMATURE OVER VOLTAGE and the other is FIELD UNDER CURRENT.
ARMATURE OVER VOLTAGE has a threshold of 125% and FIELD UNDER
CURRENT has a threshold of 85% (approximately 40% for fixed operating mode). They
each have an LED Indicator and they combine to one contact opening. The fault contact
is a N.O. contact that closes with a normal power up condition of the unit and opens with
a fault.
6.2 Analog Outputs
There are two terminals that output signals proportional to field current and armature
voltage. The signals are measured with respect to common at terminals TB1-1, 7, 8 or 10.
These terminals can be used as test points or can accept 0.110 x 0.020 quick connects to
provide an external display. TP1, IFB Meter, outputs 10 VDC at 100% of the current
range programmed by J1 on the Power Board. TP2, Scaled Armature Volts, outputs 7.7
VDC at 100% of the voltage range programmed by J4 on the Control Board.
Spare Parts
7.1 Printed Circuit Board Assemblies
Power Board ............................................................................. FR1000-000: C12144
FR3500-000: C12251
Control Board .......................................................................................... C12143-000
7.2 Power Components
FR1000-000
Dual diode, 31 ampere, 1400 V ............................................................. PMD1028-00
Dual SCR, 25 ampere, 1400 V .............................................................. PMD1017-00
FR3500-000
Dual diode, 61 ampere, 1400 V ............................................................. PMD1028-01
Dual SCR, 56 ampere, 1400 V .............................................................. PMD1026-00
7.3 Fuses & Misc
FR1000-000
F1&F2, 15 ampere, 600v Buss KTK or eq……………………………..FUS1004-00
FR3500-000
F1& F2, 40 ampere, 600 V, Littelfuse type JLS40 or equivalent ........... FUS1015-00
Ribbon Cable, 16 pin, socket/socket, 9 inches long ............................... CNT1067-00
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