Basler Electric BE1-79A 9310200114 - Manual (Page 40)

Motor Voltage
No adjustment is required for the voltage applied at terminals 2 and 8. The applied voltage can range
from 120 to 240 Vac or 125 to 250 Vdc. These terminals serve as the input to the BE1-79A power supply.
Contact Sensing Inputs
Energizing levels for contact sensing inputs and internal control voltages are jumper selectable for
operation at three nominal voltage levels. Jumpers P3, P4, and P5 should be set to the appropriate
system nominal voltage. P6 is not used in this model. Nominal voltage levels of 125 Vdc/120 Vac, 48 Vdc,
or 250 Vdc/240 Vac may be selected.
NOTE
In certain applications where 240 Vac control voltage is used, control circuit
feedback can occur through system inductive coupling. This feedback can
result in erroneous signals, causing relay operation. If there is a potential for
control circuit feedback, the jumper selectable voltage range should be
changed from the 48 Vdc factory default setting to a higher position. Selections
are provided in Table 3-1.
The following paragraphs describe how to locate and change the position of the contact-sensing jumpers.
1. The jumper terminal blocks are accessible through an opening on the left-hand side of the relay.
Locate the three jumper terminal blocks (P3 through P5). Jumper terminal block P6 is not used in this
model. Each terminal block has three pins and each jumper is factory installed on pins 2 and 3.
Figure 5-3 illustrates contact sensing jumper locations and positions.
2. To select operation at 125 Vdc or 120 Vac, remove the jumper from pins 2 and 3 and position it on
pins 1 and 2. To select operation at 250 Vdc or 240 Vac, remove the jumper from pins 2 and 3 and
position it on pin 3 for storage. (Only pin 3 of the terminal block should be covered.)
5-4 BE1-79A Installation and Configuration 9310200893 Rev C