FIELD REGULATOR UNIT Instruction Manual FR1000-000 FR3500-000
Table of Contents 1. General Description .................................................................................. 3 2. Specifications ............................................................................................. 4 2.1 Electrical ............................................................................................................4 2.2 Physical ..............................................................................................................4 3. Installation .....
1 General Description The Carotron FR1000-000 and FR3500-000 are designed to provide current regulation for DC motor or generator field windings rated from .1A-10A and 10A to 35A respectively. These units are easily set up as constant horsepower “crossover” controls to give a motor extended speed operation. Also, they can be set up as alternative field current supplies in single or multiple motor applications.
2 Specifications 2.1 Electrical AC Input • 230 VAC ± 10%, 50/60 Hz ± 2 Hz, 1 Phase • 460 VAC ± 10%, 50/60 Hz ± 2 Hz, 1Phase Maximum DC Field Output • 200 VDC, 10 Amps for FR1000-000, 35 Amps for FR3500-000 @ 230 VAC input • 400 VDC, 10 Amps for FR1000-000, 35 Amps for FR3500-000 @ 460 VAC input Field Current Trim • 6 to 1 Range Current Regulation • + 0.
EXT CUR REF DCM CN2 CLOSE TO RUN TACH IN TACH IN TB1 TACH OUT SHIELD TACH OUT FAULT RELAY CLOSE OUTPUT TO RESET 1 SOT4 SOT2 14 LOOP J2 RESPONSE FAST SLOW SOT3 SOT1 CUR /B TP1 CONTROL MODE TP2 AUTO J3 MAN VOLTS /B P1 TACH VOLTS 250V 100V 50V J5 25V ARM VOLTS 500V J4 240V P2 TACH GAIN TACH OFFSET SW1 I5 I6 FIEL WEAKE PUSH TO ADJ MIN CURRENT I1 CN1B I3 FIELD ECONOMY I2 CONTROL POWER FU1 FU2 15 AMP MAX 15 AMP MAX ARM OVER VOLTAGE P3 P4 P5 I4 FIELD UNDER CURRENT MIN
EXT CUR REF DCM CN2 CLOSE TO RUN TACH IN TACH IN TB1 TACH OUT SHIELD TACH OUT FAULT RELAY CLOSE OUTPUT TO RESET 1 SOT3 SOT1 SOT4 SOT2 14 LOOP J2 RESPONSE FAST SLOW FLD CUR F/B TP1 CONTROL MODE AUTO J3 MAN TP2 ARM VOLTS F/B 250V 100V 50V J5 25V P2 TACH GAIN TACH OFFSET FIELD REGULATOR CONTROL BOARD ASSY C12143-000 SW1 I5 I6 FIELD WEAKENED PUSH TO ADJ MIN CURRENT CN1B I1 FIELD ECONOMY I2 CONTROL POWER I3 ARM OVER VOLTAGE P3 P4 P5 I4 FIELD UNDER CURRENT FR3500-000 6 P1
3 Installation The Field Regulator Unit should be installed in accordance with the National Electric Code and any applicable local or state codes. WIRING PRECAUTIONS: Use shielded cable for all signal wiring. Connect the shield to circuit common at the receiving circuit end only. Any relays, contactors, motor starters, solenoids, etc.
4 Programming & Adjustments 4.1 Programming Jumpers J1 Field Current (power board) The unit has 5 ranges of current. They are 2,4,6,8,10 or 15, 20, 25, 30 & 35A. Set the jumper appropriately for the motor used. J2 Loop Response (control board) This setting is a function of the motor size. Smaller motors have less inductance and may need the FAST setting. Large motors may need the SLOW setting. The SOT terminals are provided for use in special applications.
4.3 DCM check points, and board test points. (The reference point for test point measurements can be circuit common at TB1- 1,7,8 or 10) TP1: TP2: Field current; 10V = 100% (100% is the J1 selected value) Armature voltage (7.7V = motor base voltage) DCM A: DCM B: DCM C: DCM D: DCM E: DCM F: DCM G: DCM I: DCM J: DCM K: DCM L: DCM M: DCM N: DCM O: DCM P: DCM R: DCM S: 12VDC +5% 5VDC +5% 15VDC +5% -15VDC +5% Field current (scaled IFB, 2.
5 Start-up Procedure FR1000 and FR3500 Field Supply start up procedure The FR1000-000, FR3500-000 Field Regulator Unit has three programmable modes of operation. Two of the modes use field current reduction to increase motor speed, which also results in reduced output torque from the motor. 1) FIXED SUPPLY: where base speed or speed at highest rated armature voltage and field current is the highest speed required and an accurate field current is needed over the temperature range of the motor.
6) .Connect field economy contact to TB1, 4-5, power and start the drive and adjust for maximum rated armature voltage. Measure motor speed. The field current can be reduced to increase speed but will result in decreased motor torque. Adjust the armature voltage if a reduction in speed is necessary. 7) Stop the drive and place in Tachometer Feedback mode if necessary. Re-check maximum speed and adjust with the armature voltage as required.
QUICK START - EXTENDED SPEED, WEAKENED FIELD OPERATION (REFER TO FIG 5 page 22) NOTE: If the Armature control has no 7v/1000 rpm input omit step 6 & 9. 1) Make preparations to measure the armature voltage with a DC voltmeter. 2) Have a tachometer ready to measure the motor shaft or machine speed. 3) Pre-set pots and jumpers as follows: On the FR1000-000, FR3500-000: a) J3, CONTROL MODE, jumper on the Control Board to MAN position. b) Wire jumper on TB1, 2-3. c) P4, MAX FIELD CURRENT, to full CCW.
9) Measure TB1-9-10, and adjust TACH GAIN, P1, to get 12.25VDC. 10) Stop the armature control. Press the MIN FIELD SET button and set P3, MIN FIELD CURRENT, to the weakened field current. Release the button and set P4, MAX FIELD CURRENT, to the base field current level. Re-start the armature supply and slowly increase the speed reference to make the armature voltage equal to about 92% of the base, maximum, armature volts.
6 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.
8 Prints Control Board Assembly Dwg.
P1 L1 230/460VAC INPUT L2 15 AMP MAX 15 AMP MAX TB2 1 FU2 FU1 CN1A 10A 8A 6A 4A 2A J1 17 A2 240/500VDC ARM INPUT A1 F2 FIELD OUTPUT F1 FR1000-000 POWER BOARD ASSY C12144-000 1A KTK OR EQ
19 1A FNQ OR EQ.
Quick Reference Table Pot/Jumper Settings Factory Preset Customer Setting 35A POWER BOARD: J1 10A OR 35A CONTROL BOARD: J2 FAST J3 MAN J4 500V J5 25V P1 MIDWAY P2 MIDWAY P3 MAX CCW P4 MAX CCW P5 MAX CW P6 DO NOT ADJ 23
3204 Rocky River Road Heath Springs, SC 29058 Phone: (803) 286-8614 Fax: (803) 286-6063 Email: SaleServ@carotron.com Web: www.carotron.
