Basler BE1-81O/U, Instruction Manual

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9137300990 Rev J BE1-81O/U Installation 4-1
SECTION 4
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INSTALLATION
INTRODUCTION
BE1-81O/U relays are shipped in sturdy cartons to prevent damage during transit. Upon receipt of a relay,
check the model and style number against the requisition and packing list to confirm that they agree.
Inspect the relay for shipping damage. If there is evidence of damage, file a claim with the carrier and
notify Basler Electric.
If the relay will not be installed immediately, place the relay in its original shipping carton and store in a
moisture- and dust-free environment.
OPERATING PRECAUTIONS
Before installing the relay, note the following precautions.
•
A minimum of 200 milliamperes in the output contact circuit is required to ensure reliable
operation of current operated targets.
•
When the connecting plugs are removed, the relay is disconnected from the operating circuit and
will not provide system protection. Always be sure that external operating conditions are stable
before removing a relay from service. Also, ensure that connecting plugs are installed before
replacing the case cover.
MOUNTING
Because the BE1-81O/U relay is of solid-state design, it may be mounted at any convenient angle.
The BE1-81O/U relay is supplied in an S1 or M1 case. Relays with one setpoint (option 1-6) or two
setpoints (option 1-7) are supplied in an S1 case. Relays with three setpoints (option 1-8) or four
setpoints (option 1-9) are supplied in an M1 case.
S1 and M1 cases are configured for semi-flush mounting (option 4-F) or projection mounting (option 4-P).
S1 dimension drawings and panel cutting diagrams are provided in Figures 4-1 through 4-6. M1
dimension drawings and panel cutting diagrams are provided in Figures 4-7 through 4-13.
NOTE
Be sure that the relay is hard-wired to earth ground with no smaller than 12 AWG
copper wire attached to the ground terminal on the rear of the relay case. When
the relay is configured in a system with other devices, it is recommended to use a
separate lead to the ground bus from each device.