Baldor Dodge Instruction Manual

Instruction Manual for Connecting Sensors on Pillow Block Bearings

Temperature Monitor, Alarm System, Embedded Thermocouple and

Transmitter, Vibration Accelerometer, and Proximity Switch

Bearing Temperature Monitor-Alarm System

A. Connection to a PLC:

– Use an AC input card 120 VAC
– Cards available from Allen Bradley for SLC 500 are

1746-IA4, 1746-IA8 and 1746-IA16

B. If no PLC is used, the DODGE Light and Buzzer Alarm

Module can be used (DODGE Part No. 063524).
Connections are shown below.

DANGER: The user is responsible for conforming
with the National Electrical Code and all other
applicable local codes. Wiring practices, grounding,
disconnects and overcurrent protection are of
particular importance. Failure to observe these
precautions could result in severe bodily injury or
loss of life.

I. Bearing Temperature Alarm Monitor System:

1. A complete installation, Pillow Block with temperature
switch, conduit, and alarm is shown in Figure 1. Items
supplied by DODGE are the Pillow Block with
temperature switch and the alarm monitor. Conduit,
wires, and liquid tight fittings are supplied by the user.

2. A DODGE Pillow Block with temperature switch mounts
on the shaft exactly like a standard pillow block

.

screws on the front. (See Figure 2)

3. Install a conduit between the monitor and the bearing

1

using

/2" liquid tight fittings.

4. Use 16 AWG wires installed in the conduit to connect
the temperature switch to the alarm monitor.

5. Verify that AC power is disconnected and locked out or
tagged at the power source. Bring AC power wires to
the top of the alarm monitor and secure using
tight fitting.

6. At the bearing remove the temperature switch cover,

nect the two leads of the temperature switch to the

con
two wires installed in step 4 above using approved wire
nut connectors and reinstall the cover.

7. Connect the end of one wire that is connected to the
switch to one end of the fuse (6). Connect the second
wire from the temperature switch to the joint (12).

8. Connect the black (hot) wire from the power source to
the other end of the fuse (14). Connect the white
(neutral) wire to lead (13). Connect the green (ground)
wire to the ground screw (7) on the back of the monitor.
Make sure the screw is tight and the wire is secure.

9. Replace the cover and secu

the two screws

re with

1

/2" liquid

.

II. Alarm Monitor Installation:

1. Install the alarm monitor in a visible and close safe
place using the four mounting holes on the back of the
enclosure.

2. Remove the enclosure cover by removing the two

WARNING: Because of the possible danger to person(s) or property from accidents which may result from the improper use of products, it is important that
correct procedures be followed. Products must be used in accordance with the engineering information specified in the catalog. Proper installation,
maintenance and operation procedures must be observed. The instructions in the instruction manuals must be followed. Inspections should be made as
necessary to assure safe operation under prevailing conditions. Proper guards and other suitable safety devices or procedures as may be desirable or as may
be specified in safety codes should be provided, and are neither provided by Baldor Electric Company nor are the responsibility of Baldor Electric Company.
This unit and its associated equipment must be installed, adjusted and maintained by qualified personnel who are familiar with the construction and operation
of all equipment in the system and the potential hazards involved. When risk to persons or property may be involved, a holding device must be an integral part
of the driven equipment beyond the speed reducer output shaft.

P.O. Box 2400, Fort Smith, AR 72902-2400 U.S.A., Ph: (1) 479.646.4711, Fax [phone], International Fax [phone]

6040 Ponders Court, Greenville, SC 29615-4617 U.S.A., Ph: (1) 864.297.4800, Fax: [phone]

© Baldor Electric Company

MN3043 (Replaces 499807) 06/30/09

*3043-0609*

World Headquarters

Dodge Product Support

www.baldor.com

All Rights Reserved. Printed in USA.

Pillow Block Assemblies with Embedded Thermocouple and Transmitter

A. Connection to a PLC:

– The transmitter output can be connected directly to an

analog input card with internal loop power supply.

– Typical cards that can be used from Allen Bradley are

1771-NBSC and 1771-NB4S.

B. If a PLC is not available, the panel mounted temperature

indicator available from DODGE can be used to power
the transmitter and display the temperature. The indicator
model is CT1010, Part No. 055221. The indicator has two
settable alarm relays for warning and shut down. The
connections are shown in the instruction manual supplied
with the indicator.

I. Pillow block assemblies equipped with embedded

thermocouple, transmitter and data acquisition system i
shown in Figure 3.

s

II. Connection of pillow block with loop driver or data

acquisition system is shown in Figure 4 and Figure 5.

1. Take the top cover (1) off from the housing (2) by
removing the four screws.

2. Install a
cover (1) using the hole on the side.

3. Use a flex conduit (4) between the cover and the loop
driver or your data acquisition system. Voltage supply
required is 8.5 volts to 35 volts DC with no load.

4. Install the signal wires (two twisted copper wires) (5)
inside the flex conduit.

5. Connect the ends of the two wires to the transmitter
(6) terminals 1 and 2 and secure the screws.

6. Lo

op resistance: The maximum allowable resistance
of the signal carrying load, including extension wires
and load resistance, is given by this formula:

R approximately = (V supply – 8.5V)
.02 amps

Example:
If supply voltage is 24 VDC, the loop resistance must

be less than 775 ohm (wires plus R1). Use 80% of the
calculated value to protect against drop in voltage.

7. Replace the cover and tighten the four (4) screws.

8. Connect the other ends of the two wires (5) to your
loop driver/power supply or your data acquisition
system with built-in power supply.

9. Your system should now be able to read the
temperature between 0 and 250ºF.

10. The output of the transmitter is 4–20 mA (milliamps).

1

/2" liquid tight electrical fitting (3) on the

2