Baldor BC145 Installation And Operating Manual
SIGNAL ISOLATOR
BC145 Signal Isolator Board
Installation and Operating Manual
7/2000 MN1373
TABLE OF CONTENTS
Section Page
i. Safety Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
I. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
II. Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
III. Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
IV. Output Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
V. Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Tables
1. General Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Voltage Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figures
1. Control Layout & Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2A. 115V Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2B. 230V Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Current Input Signal Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Voltage Input Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5A. Leader/Follower Voltage Following System with Multiple Motors . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5B. Leader/Follower Voltage Following System (Single Main Potentiometer) . . . . . . . . . . . . . . . . . . . . 9
6A Leader/Follower Voltage Following System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6B. Process Control with Auto/Manual Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6C. Process Control with Auto (Ratio Pot)/Manual Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6D. Auto/Manual Operation with Potentiometer on BC145 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
ii
1
This product complies with all CE directives pertinent at the time of manufacture. Contact
factory for detailed installation instructions and Declaration of Conformity.
i. SAFETY WARNING! Please read carefully:
Be sure to follow all instructions carefully. Fire and/or electrocution can result due to improper
use of this product.
This product should be installed and serviced by a qualified technician, electrician, or electrical
maintenance person familiar with its operation and the hazard involved. Proper installation,
which includes wiring, mounting in proper enclosure, fusing or other over current protection and
grounding, can reduce the chance of electric shocks, fires, or explosion in this product or products used with this product, such as electric motors, switches, coils, solenoids, and relays. Eye
protection must be worn and insulated adjustment tools must be used when working with control under power. This product is constructed of materials (plastics, metals, carbon, silicon, etc.)
Which may be a potential hazard. Proper shielding, grounding, and filtering of this product can
reduce the emission of radio frequency interference (RFI) which may adversely affect sensitive
electronic equipment. If information is required on this product, contact our factory. It is the
responsibility of the equipment manufacturer and individual installer to supply this safety warning to the ultimate user of this product. (SW effective 11/92)
!
I. 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 - 550V DC) and, in addition, a wide range of input current signals (4 - 20 mA, 10 50 mA and 1 - 5 mA). 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” – see page 9). 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 - 10V DC input yields a 0 - 10V DC output.
II. MOUNTING
Mount the Signal Isolator using (4) 6-32 screws (not included). Use the Control Layout and
Mechanical Specifications drawing on page 3 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
FIGURE 1 – CONTROL LAYOUT & MECHANICAL SPECIFICATIONS (INCHES / [mm])
(Illustrates Factory Setting of Jumpers and Approximate Trimpot Settings)
3
1
MAX
P1
VOLT CUR
J1
MIN
2345678910
(4) mounting holes for #6 screws
2.244
[57.0]
0.276
[7.00]
0.276
[7.00]
4.291
[109.00]
4.843
[123.00]
2.795
[71.0]
Loading...