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Baldor Electric Company, P. O. Box 2400, Ft. Smith, AR 72902-2400, (479) 646-4711, Fax (479) 648-5792
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IMPORTANT: The following information and instructions are to be used as a supplement to the Installation and Operation
Manual (Part No. MN704). The manual must be read and understood before attempting to operate this control.
• The General Performance Specifications, Electrical Ratings, and Mechanical Specifications of these controls have not changed •
• Jumper J2 (DC Output Voltage / Tach Selection) and Enable Connector (EN) have been added •
• Diagnostic LEDs for Power On and Current Limit • Now with SMT Construction •
To use the Enable Circuit, remove the jumper that is factory installed on CONN1.
Note: 1. For 50V/1000 tach-generator, connect to Terminals B (+) and I2 (-).
Application Note: When the control is stopped using Inhibit, the motor will coast to stop. When the control is
stopped using Enable, the motor will decelerate to stop. The deceleration time can only be made longer than the
normal coasting time of the load.
Catalog No.
Notes: 1. The 180V position, on Jumper J2, is not available on Catalog No. BC141. 2. The control
will run at full speed, if Jumper J2 is in the "T" position and the tach-generator is miswired.
Part No. MN704-SUP
(A42130) - Rev. A03 - 5/21/2004 - Z2993A03
Jumper J2 (DC Output Voltage / Tach Selection)
90 Volts DC
BC141
(Factory Setting)
BC142
(Step-Down)
180 Volts DC
(Tach-Generator)
(Factory Setting)
(Tach-Generator)
T
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Table of Contents
Related Manuals for Baldor BC142
Summary of Contents for Baldor BC142
- Page 1 Baldor Electric Company, P. O. Box 2400, Ft. Smith, AR 72902-2400, (479) 646-4711, Fax (479) 648-5792 &DWDORJ 1RV %& DQG %& 6XSSOHPHQWDO ,QIRUPDWLRQ IMPORTANT: The following information and instructions are to be used as a supplement to the Installation and Operation Manual (Part No.
- Page 2 DC DRIVE BC141, BC142 & BC142-6 DC CONTROL Installation and Operation Manual 5/2004 MN704...
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Page 3: Table Of Contents
TABLE OF CONTENTS Section Page Simplified Installation Instructions ............. 4 Safety Warning . - Page 4 11 AC Line Input Voltage Selection (Jumper J1 (Catalog No. BC142-6 Only)) ......
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Page 5: Simplified Installation Instructions
10 and as described in Section 6.1, on page 13. Catalog No. BC141 is rated for 115 Volt AC line input only. Catalog No. BC142 is rated for 230 Volt AC line input only. Catalog No. BC142-6 is rated for 115 Volt AC line input (Jumper J1 in the “115V” position) and 230 Volt AC line input (Jumper J1 in the “230V”... - Page 6 1.5 AC line Fusing – A 25 Amp AC line fuse is factory installed in the AC Line Fuse Holder, as shown in Figure 1, on page 10. It is recommended that this fuse be changed to a 12 Amp fuse for motors rated 7.5 Amps DC or less.
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Page 7: Safety Warning
SAFETY WARNING – Please read carefully. Definition of Safety Warning Symbols: Electrical Hazard Warning Symbol – Failure to observe this warning could result in electrical shock or electrocution. Operational Hazard Warning Symbol – Failure to observe this warning could result in serious injury or death. -
Page 8: Introduction
. Catalog Nos. BC142 and BC142-6 also allow operation of 90 Volt DC motors when used on 208/230 Volt AC line input The versatility of the control is confirmed by its extensive list of standard features, such as: selectable armature and tach feedback and adjustment trimpots for minimum speed, maximum speed, IR compensation, and linear acceleration and deceleration. - Page 9 Diagnostic LEDs – Power On (PWR ON) and Current Limit (CL). Catalog No. BC141 operates on 115 Volt AC line input with 90 Volt DC motors. Catalog No. BC142 operates on 230 Volt AC line input with 180 Volt DC motors or 90 Volt DC motors (step-down). - Jumper Selectable.
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Page 10: Electrical Ratings
.75 (.6) 24.0 16.0 1.5 (1.1) 50, 100 0 - 180 12.0 1.5 (1.1) 24.0 16.0 3 (2.3) 100, 200 BC142 0 - 90* 12.0 .75 (.6) 24.0 16.0 1.5 (1.1) 0 - 90 12.0 .75 (.6) 24.0 16.0 1.5 (1.1) - Page 11 FIGURE 1 – CONTROL LAYOUT & GENERAL CONNECTION DIAGRAM (Catalog No. BC142-6 Shown) Plug-In Horsepower Resistor® Supplied Separately Blue DECEL 25 Amp Line Fuse Armature Fuse Factory Installed Supplied Separately Plug-In Horsepower ACCEL Resistor® and Enable Switch Armature Fuse Kit...
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Page 12: Application Information
FIGURE 2 – MECHANICAL SPECIFICATIONS (Inches/mm) MAIN SPEED OPTIONAL AUXILIARY HEAT SINK 3.64 POTENTIOMETER 24.9 92.5 (SUPPLIED) 3.10 78.5 3/8" 1/2" 12.7 CONTROL MOUNTING "A" 6 SLOTS 5.63 1/4" ROUND MOUNTING "B" 142.9 7.00 SHAFT TAPPED 10-32 177.8 (3 PLACES) 4.30 3.00 3.11... -
Page 13: Mounting Instructions
4.3 Acceleration Start – The control contains an adjustable acceleration start feature which allows the motor to smoothly accelerate from zero speed to full speed over a time period of 0.2 - 10 seconds. The acceleration trimpot (ACCEL) is factory set for 2 seconds. 4.4 Limitation In Use –... -
Page 14: Wiring Instructions
Catalog No. BC141 operates on 115 Volt AC line input only. Catalog No. BC142 operates on 208/230 Volt AC line input only. Catalog BC142-6 operates on 115 Volt AC line input when Jumper J1 is set to the “115” position and operates on 208/230 Volt AC line input when Jumper J1 is set to the “230V” position (factory... -
Page 15: Field Connection (Shunt Wound Motors Only)
(Armature Fuse) and the negative lead (-) to Terminal “A-”, as shown in Figure 1, on page 10. On Catalog Nos. BC142 and BC142-6, be sure Jumper J2 is set to the corresponding motor voltage, as described in Section 7.2, on page 20. Be sure the correct Plug-In Horsepower Resistor® is installed, as described in Section 9, on page 21. -
Page 16: Remote Main Speed Potentiometer Connection
6.5 Remote Main Speed Potentiometer Connection – The control FIGURE 3 – REMOTE MAIN SPEED POTENTIOMETER CONNECTION is supplied with a Main Speed Potentiometer to control motor speed. Wire the low side of the potentiometer to Terminal “P1”. Terminal "P3" Wire the wiper of the potentiometer to Terminal “P2”. -
Page 17: Enable Switch Or Contact Wired To The Enable Connector
6.7 Enable Circuit Connection – The control can be started and stopped with an Enable Circuit (close to run), as described below. WARNING! The Enable Circuit is never to be used as a Safety Disconnect since it is not fail-safe. Use only the AC line for this purpose. 6.7.1 Enable Switch or Contact Wired to the Enable Connector –... -
Page 18: Enable Switch Or Contact Wired To The Main Speed Potentiometer
Volts DC). If the MIN FIGURE 6 – ENABLE SWITCH OR CONTACT WIRED TO THE MAIN SPEED POTENTIOMETER Trimpot is set to other than 0 Volts DC, the Terminal "P3" motor will run at that Terminal "P2" speed when the switch or contact is This jumper must Terminal "P1"... -
Page 19: Dc Tach-Generator Connection (7 Volts Per 1000 Rpm)
6.9 DC Tach-Generator Connection – A DC tach-generator FIGURE 8 – DC TACH-GENERATOR CONNECTION (7 VOLTS PER 1000 RPM) can be used for load regulation of 1% of the set speed. Note: Jumper J2 must be set to the “T” position for Terminal "T"... -
Page 20: Setting Selectable Jumpers
See Figure 11, on page 20. Notes: 1. Jumper J1 is installed on Catalog No. BC142-6 only. 2. When Jumper J1 is set to the “115V” position, Jumper J2 must be set to the “90V” position (or the “T” position if using a tach-generator). -
Page 21: Ac Line Fusing
Notes: 1. On Catalog No. BC141, the “180V” position is not available on Jumper J2. 2. On Catalog No. BC142-6, do not set the output voltage to 180 Volts DC when the AC line input is set to 115 Volts. -
Page 22: Plug-In Horsepower Resistor® And Armature Fuse Kit
each line must be used. The optional Barrier Terminal Board (Catalog No. BC147) contains prewired AC line and armature fuse holders, as described in Section 14.2, on page 30. The AC Line Fuse protects the control against catastrophic failure. If the AC Line Fuse blows, the control is mis- wired, the motor is shorted or grounded, or the control is defective. -
Page 23: Recommended High Voltage Dielectric Withstand Testing (Hi-Pot Testing)
TABLE 5 – PLUG-IN HORSEPOWER RESISTOR® & ARMATURE FUSE KIT SELECTION 90 - 130 Volt 180 Volt Approximate Plug-In Horsepower Plug-In Horsepower Armature DC Motors DC Motors Motor Current Resistor® and Armature Resistor® Fuse Rating (HP) (HP) (Amps DC) Fuse Kit Catalog No. Value (Ohms) (Amps) 1/100... -
Page 24: Hi-Pot Test Setup
FIGURE 13 – HI-POT TEST SETUP High Voltage Dielectric Withstand Tester (Hi-Pot Tester) LEAKAGE AC KILOVOLTS 10mA RETURN TEST VOLTAGE Connect all Speed Control H. V. RESET terminals together ZERO Motor Speed Control AC Line input Motor Motor Wires Terminals Frame Connect Hi-Pot Tester Auxiliary Equipment... -
Page 25: Trimpot Adjustments
10.2 The Hi-Pot Tester must have an automatic ramp-up to the test voltage and an automatic ramp-down to zero voltage. Note: If the Hi-Pot Tester does not have automatic ramping, then the hi-pot output must be manually increased to the test voltage and then manually reduced to zero. This procedure must be followed for each machine to be tested. - Page 26 11.2 Deceleration Trimpot (DECEL) – The DECEL Trimpot controls the amount of FIGURE 15 DECEL TRIMPOT RANGE ramp-down time when the Main Speed Potentiometer is adjusted to a lower speed. The DECEL Trimpot has been factory set to 2 seconds, which is the amount of time it will take for the motor to decelerate from full speed to zero speed.
- Page 27 Warning! If possible, do not adjust trimpots with the main power applied. If adjustments are made with the main power applied, an insulated adjustment tool must be used and safety glasses must be worn. High voltage exists in this control. Electrocution can result if caution is not exer- cised.
- Page 28 wired in series with the motor armature). If using an AC ammeter wired in the AC line input, the factory Current Limit setting will read 0.75 times the full load rating of the motor. Do not exceed 2 times motor current rating (maximum clockwise position). Note: On cyclical loads, it may be normal for the CL LED to momentarily flash.
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Page 29: Diagnostic Leds
Warning! If possible, do not adjust trimpots with the main power applied. If adjustments are made with the main power applied, an insulated adjustment tool must be used and safety glasses must be worn. High voltage exists in this control. Electrocution can result if caution is not exer- cised. -
Page 30: Typical Dynamic Brake Circuit Connection
WARNING! Do not disconnect and reconnect the motor armature with the AC line applied or cata- strophic failure will result. See Section 13.2. 13.2 Armature Switching and Dynamic FIGURE 20 – TYPICAL DYNAMIC BRAKE CIRCUIT CONNECTION Braking – If the armature is to be dis- connected and reconnected with the AC Speed Control N.O. -
Page 31: Optional Accessories
14 OPTIONAL ACCESSORIES 14.1 Auxiliary Heat Sink (Catalog No. BC143) – Doubles the horsepower rating of the control. 14.2 Barrier Terminal Board (Catalog No. BC147) – Converts the quick-connect terminals of the control to a barrier terminal block. Contains PC board mounted line and armature fuse holders (fuses supplied separate- ly). - Page 32 – NOTES –...
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Page 33: Limited Warranty
Claims for purchase price refunds, repairs, or replacements must be referred to BALDOR with all pertinent data as to the defect, the date purchased, the task performed by the control, and the problem encountered. No liability is assumed for expendable items such as fuses.