FLANGE 6W3990 - Caterpillar

Normal Pickup Voltage
This adjustment determines the minimum voltage that is required in order to transfer the switch to NORMAL. The range of this setting is 85 to 100 percent. This setting is adjustable in one percent increments. Once the normal power source goes above the pickup voltage, the transfer to NORMAL timer begins. This sensor can be adjusted via the "SET" menu. The factory default setting is 90 percent.Normal Pickup Frequency
This adjustment determines the minimum frequency that is required in order to transfer the switch to NORMAL. The range of this setting is 90 to 100 percent. This setting is adjustable in one percent increments. Once the normal power source goes above the pickup frequency, the transfer to NORMAL timer begins. This sensor can be adjusted via the "SET" menu. The factory default setting is 95 percent.Normal Dropout Voltage
This adjustment determines the low voltage threshold. The range of this setting is 75 to 98 percent. This setting is adjustable in one percent increments. The dropout voltage must be a minimum of 2 percent below the pickup voltage. Once the voltage falls below the threshold, the engine start timer begins. This sensor can be adjusted via the "SET" menu. The factory default setting is 80 percent.Emergency Pickup Voltage
This adjustment determines the minimum voltage that is required in order to transfer the switch to EMERGENCY. The range of this setting is 85 to 100 percent. This setting is adjustable in one percent increments. Once the emergency power source goes above the pickup voltage, the transfer to EMERGENCY timer begins. This sensor can be adjusted via the "SET" menu. The factory default setting is 90 percent.Emergency Pickup Frequency
This adjustment determines the minimum frequency that is required in order to transfer the switch to EMERGENCY. The range of this setting is 90 to 100 percent. This setting is adjustable in one percent increments. Once the emergency power source goes above the pickup frequency, the transfer to EMERGENCY timer begins. This sensor can be adjusted via the "SET" menu. The factory default setting is 95 percent.Emergency Dropout Voltage
This adjustment determines the low voltage threshold. The range of this setting is 75 to 98 percent. This setting is adjustable in one percent increments. The dropout voltage must be a minimum of 2 percent below the pickup voltage. Once the voltage falls below the threshold, the transfer to NORMAL timer is bypassed in order to transfer the load to the normal power source. This sensor can be adjusted via the "SET" menu. The factory default setting is 80 percent.Optional Sensors
Normal Overvoltage
The normal overvoltage sensor is also referred to as the "R1" sensor.This feature provides a maximum voltage threshold at 110% of the nominal voltage. This feature can be