ABB Baldor BC145 Montageanleitung

MN1373

Installation & Operating Manual

4/17

BC145 SIGNAL ISOLATOR BOARD

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iMN1373

Chapter 1

Introduction

Safety Warning .............................................................................1-1

General Performance Speciﬁcations .............................................................1-4

Chapter 2

Installation

Mounting Instructions........................................................................... 2-1

Chapter 3

Wiring

AC Power .................................................................................3-1

Input Terminals .............................................................................3-2

Current Signal Input .........................................................................3-2

Voltage Signal Input .........................................................................3-4

Chapter 4

Adjustments

Output Signal ..............................................................................4-1

Table of Contents

1-1 MN1373

Chapter 1

Introduction

The BC145 Signal Isolator is used to isolate, amplify and condition DC voltage and current signals from any source (motors,

tachs and transducers) which will provide most adjustable speed motor controls with a voltage following input. The

maximum output voltage of the isolator is 10 volts which is a linear function of the input signal.

The BC145 is versatile since it can accommodate a wide range of input voltages (0-25*, 0-120 and 0-550VDC) and, in

addition, a wide range of input current signals (4-20mA, 10-50mA and 1-5mA). The Voltage/Current (“VLT/CUR”) jumper is

used to change the BC145 from a voltage to current input.

BC145 is a unipolar input, providing 0-10V input. For Regenerative Drives with bipolar ±10V input, other Signal Isolators are

available.

A built-in power supply enables the BC145 to be controlled with a 5KΩ remote potentiometer (connect potentiometer to

terminals “P1”, “5” and “6”). The potentiometer can also be wired for Auto/Manual Operation.

*The input range of 0-25V is the maximum voltage that can be applied to terminals “5” and “6”. The minimum input voltage

is 0-5 volts which can achieve an output voltage of 0-10 volts. The unit is factory calibrated so that a 0-10VDC input yields a

0-10VDC output.

SAFETY NOTICE

A Warning statement indicates a potentially hazardous situation which, if not avoided, could result in injury or death.

A Caution statement indicates a potentially hazardous situation which, if not avoided, could result in damage to property.

A Note indicates additional information that is not critical to the installation or operation.

WARNING: This equipment may contain voltages as high as 1000 volts! Electrical shock can cause serious or fatal injury. Only qualiﬁed

personnel should attempt the start-up procedure or troubleshoot this equipment.

WARNING: Be sure the system is properly grounded before applying power. Do not apply AC power before you ensure that all grounding

instructions have been followed. Electrical shock can cause serious or fatal injury.

1-2MN1373

SAFETY NOTICE Continued

WARNING: Electrical shock can cause serious or fatal injury. Be sure that all power is disconnected and there is no voltage present

from this equipment or equipment to which it is or will be connected. Electrical shock can cause serious or fatal injury. Only

qualiﬁed personnel should attempt the installation and start-up procedures.

WARNING: Electrical shock can cause serious or fatal injury. Verify there is no voltage phase-to-phase or phase-to-neutral at the motor

leads before connecting motor to this control. Motor may have high voltage present even when disconnected from this control.

WARNING: Do not use motor overload relays with an automatic reset feature. These are dangerous since the process may injure someone

if a sudden or unexpected automatic restart occurs. If manual reset relays are not available, disable the automatic restart

feature using external control wiring.

WARNING: This unit has an automatic restart feature that will start the motor whenever input power is applied and a RUN (FWD or REV)

command is issued. If an automatic restart of the motor could cause injury to personnel, the automatic restart feature should

be disabled.

WARNING: Using a jumper to eliminate the start/stop function will cause the motor to run at the Main Speed Potentiometer setting when

the AC line is applied.

WARNING: If possible, do not adjust trim pots with the main power applied. Electrical shock can cause serious or fatal injury. If

adjustments are made with the main power applied, an insulated adjustment tool must be used to prevent shock hazard and

safety glasses must be worn.

WARNING: Do not use this drive in an explosive environment. An explosion can cause serious or fatal injury. This drive is not explosion

proof.

WARNING: When the Enable jumper is installed, the drive and motor will start and run when AC power is applied, when power is restored

after a momentary power loss, or after an overload or TCL fault is reset. The user must ensure that automatic start up of the

driven equipment will not cause injury to operating personnel or damage to the driven equipment. The user is responsible

for providing suitable audible or visual alarms or other devices to indicate that the drive may start at any moment. Failure to

observe this warning could result in severe bodily injury or loss of life.

WARNING: Do not use start/stop, inhibit or enable functions as a safety disconnect. Use only an AC line disconnect for that purpose.

Failure to observe this warning could result in severe bodily injury or loss of life.

Caution: Disconnect motor leads (A1 and A2) from control before you perform a Dielectric Withstand test on the motor. Failure to

disconnect motor from the control will result in extensive damage to the control. The control is tested at the factory for high

voltage / leakage resistance as part of Underwriter Laboratory requirements.

1-3 MN1373

SAFETY NOTICE Continued

Caution: Do not connect AC power to the Motor terminals A1 and A2. Connecting AC power to these terminals may damage the control.

Caution: Baldor recommends not to use Grounded Leg Delta transformer power leads that may create ground loops. Instead, we

recommend using a four wire Wye.

Caution: Suitable for use on a circuit capable of delivering not more than 5,000 RMS symmetrical short circuit amperes listed here at

rated voltage.

Caution: Adjusting the current limit above 150% of the motor nameplate rating can cause overheating and demagnetization of the PM

motor.

Caution: Do not leave the motor in a locked rotor condition for more than a few seconds since motor damage may occur.

Caution: Shunt wound motors may be damaged if ﬁeld windings remain energized for an extended period of time without armature

rotation.

Receiving

Each control is thoroughly tested at the factory and carefully packaged for shipment. When you receive your control, there

are several things you should do immediately.

1. Observe the condition of the shipping container and report any damage immediately to the commercial carrier that

delivered your control.

2. Verify that the part number you received is the same as the part number listed on your purchase order.

3. Do not unpack until ready for use.

1-4MN1373

Table 1-1 General Performance Speciﬁcations

Description Speciﬁcation

AC Power Requirements 115 or 208-230VAC, 50/60Hz (1)

Signal Input Voltage

(2)

0-25, 0-120, 0-550VDC

Signal Input Current

(2)

1-5, 4-20, 10-50mA (3)

Maximum Output Voltage 10 volts

Maximum Output Current 10mA

Range of “MIN” Trimpot ±3 volts

Range of “MAX” Trimpot 0 to 2 times the input voltage with maximum of 10 volts

Linearity (4) ±0.1%

Temperature Drift (4) 4mV per °C

Temperature Operating Range 0-40°C / 32-104°F

Operating Humidity Range (% Relative, Non-Condensing) 0 - 95

Storage Temperature -25 to +85°C / -13 to +185°F

Note: (1) To achieve full speciﬁcations, input voltage must be within ±10% of nominal.

(2) Floating (non-grounded) or grounded input signal may be used.

(3) To convert from 4-20mA to 1-5mA, add a 1kΩ 1/4W resistor across terminals “5” and “6”. To convert to 10-5-mA, add a 150Ω 1W

resistor across terminals “5” and “6”. See Figure 3-3.

(4) Speciﬁcations are based on an output of 10 volts.

2-1 MN1373

Chapter 2

Installation

Mounting Instructions

Mount the Signal Isolator using (4) 6-32 screws (not included). Use the Control Layout and Mechanical Speciﬁcations drawing

to locate the mounting holes. The unit is designed to be mounted in any position providing its components do not come in

contact with grounded or live wiring.

2-1 Control Layout & Mechanical Speciﬁcations (Inches/[mm])

(Illustrates Factory Setting of Jumper J1)

3-1MN1373

Chapter 3

Installation

Wiring

WARNING: READ SAFETY WARNINGS BEFORE ATTEMPTING TO USE THIS CONTROL.

Caution: To avoid erratic operation, do not bundle AC Line and motor wires with potentiometer, voltage following, enable, inhibit or other

signal wiring. Use shielded cables on all signal wiring over 12” (30cm). The shield should be earth grounded on the control

side only.

AC Power

The BC145 is powered with either 115 or 230VAC, 50/60 Hz by arranging the jumpers between terminals “1” to “4” properly.

See Figures 3-1 and 3-2. Be sure unit is wired in accordance with the National Electrical Code and other codes that may

apply. It is recommended that a 1 amp fuse be installed in series with the AC line.

3-1 115V Connection

3-2 MN1373

3-2 230V Connection

Input Terminals

A voltage or current signal from a microprocessor, tachometer, transducer, etc. is to be connected to terminals “5” through

“8”. The selection of the proper terminal is based on the maximum level of the input signal. See Figure 3-3, Table 3-1 and

Figure 3-4.

Current Signal Input

WARNING: READ SAFETY WARNINGS BEFORE ATTEMPTING TO USE THIS CONTROL.

The Signal Isolator accepts 4-20mA DC input to provide 0-9VDC output. Connect the current signal input common (-) to

Terminal “5” and the positive (+) to Terminal “6”, as shown in Figure 3-3. Other current signal input ranges can also be used

by installing appropriate resistors across terminals 5 and 6. Calibrate the Signal Isolator in accordance with the procedure

described below.

Note: Two resistors for 10-50mA and 1-5mA inputs are supplied in the hardware bag included with this kit.

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