Basler Electric BE3-81O - Manual (Page 2)

A trip occurs when the sensed frequency rises above 65 Hz.
The relay resets when the frequency decreases below
63 Hz.
INSTALLATION
BE3 frequency relays are designed for mounting on
standard DIN rails that comply to DIN-EN 50022. Mounting
involves hooking the top edge of the cutout on the base of
the case over one edge of the DIN rail. The opposite side of
the cutout containing the release clip is then pushed over
the opposite side of the DIN rail. To remove or reposition the
relay, lever the release clip and move the relay as required.
BE3 relays should be installed in a dry, vibration-free
location where the ambient temperature does not exceed
the operating temperature range. Connections to the relay
should be made using wire that meets applicable codes and
is properly sized for the application. Figure 1 shows the
terminal connections for the BE3-81O, BE3-81U, and BE3-
81O/U relays.
CALIBRATION
The calibration marks on the faceplate have a maximum
error of 10% and are provided only as guides. Proper
calibration requires using an accurate frequency meter in
parallel with the input signal. Use the following procedure to
calibrate your relay.
Overfrequency
1. Adjust the SET and RESET controls fully clockwise.
2. Apply the desired trip frequency to the relay.
3. Slowly adjust the SET control counterclockwise until the
relay trips.
4. Reduce the applied frequency to the desired reset level.
5. Slowly adjust the RESET control counterclockwise until
the relay resets.
Underfrequency
1. Adjust the SET control fully counterclockwise and the
RESET control fully clockwise.
2. Decrease the applied frequency from the nominal value
until the desired tripping frequency is reached.
3. Slowly adjust the SET control clockwise until the relay
trips.
4. Increase the applied frequency to the desired reset
level.
5. Slowly adjust the RESET control counterclockwise until
the relay resets.
MAINTENANCE
BE3 relays are solid-state devices that require no
maintenance. In the event that your relay requires repair,
contact Basler Electric, Highland, IL, USA for return
authorization.
ORDERING INFORMATION
Figure 2 shows the BE3 frequency relay style number
identification chart.
FIGURES
Figure 1. BE3-81O, BE3-81U, and BE3-81O/U Input Connections
Figure 2. BE3-81O, BE3-81U, and BE3-81O/U Style Number Identification Chart
Publication
9321500990
Revision
B
Instructions
Date
04/14
Page
2 of 2