Bimba PFC-LRT - Manual (Page 6)

Leaders in Actuation.
Bimba Manufacturing Company
Monee, IL 60449-0068
Telephone: 708.534.8544
Email: [email protected]
www.bimba.com
Rev Level: 0
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The information presented is in Bimba’s best engineering opinion and should be used for reference only. Recommendations derived should be verified under
actual operating conditions. Bimba reserves the right to change specifications without prior notice.
6
B. Operating Mode Configurations
1. Independent Relay Mode
The standard operation of a dual output unit is the Independent Relay Mode.
a. Non-Inverted Operation
To implement - install load to Normally Open (NO) side of the relays. Terminal 10 for Relay
1 and Terminal 13 for Relay 2. Terminal configuration is shown in FIGURE 2. When the load
is connected to the (NO) sides of the relays, the output will turn on when the analog output
is greater than its set point and turn off as the analog output drops below the set point
(See FIGURE 3).
b. Inverted Operation
To implement - install load to Normally Closed (NC) side of the relays. Terminal 9 for Relay
1 and Terminal 12 for Relay 2.
When the load is connected to the NC sides of the relays, the output will turn off when the
analog output is greater than its set point and turn on as the analog output drops below
the set point. (See FIGURE 3)
c. Limit Switch Operation
To implement - load must be installed to one Normally Closed (NC) Relay lead and one
Normally Open (NO) Relay lead. Use Terminal 9 for Relay 1; Set Point 1 and Terminal 13
for Relay 2; Set Point 2. (Terminal configuration is shown in FIGURE 2.). This arrangement
turns on Relay 1 when the analog output is less than Set Point 1 and turns on Relay
2 when the Analog Output is greater than Set Point 2. This is traditionally the information
provided by a set of limit switches.
As indicated in FIGURE 4, the Independent Relay Mode of operation is factory enabled with Jumper 1 in
Position A.
To change the operation of the controller, the following procedures should be followed. Jumper 1 is
located on the bottom side of the circuit board. The jumper can be accessed by removing all four corner
screws of the controller. At this point, the cover and circuit board should come out of the base. Turn the
cover and circuit board over so that the bottom of the circuit board is visible. It should look like Figure 5.
The jumper can be moved into Position A or B by pulling up on the black jumper and placing it over the
appropriate pins.
When the jumper is located in the desired position, place the circuit board and cover back into the base
and tighten all four corner screws.