RAM DBS II - Troubleshooting and Diagnostics; 7.0 Troubleshooting; 7.1 Start-Up Problems

RAM DBS II
Refrigeration Solid State Starter
5.2.3 Ramp / Bypass Time - SW3
In the Step Ramp mode this 10-position rotary switch sets the amount of time the current draw is allowed
to increase from its initial Current Step level (set by SW2) to a maximum of 500% FLA. The maximum
time until the bypass contactor is energized is 5 seconds, plus the programmed ramp time. - See Table
15, Section 9.
In the Constant Current mode, this switch sets the maximum time until the bypass contactor is energized.
SW3 is adjustable from 3-30 seconds, in 3-second increments.
16
FIGURE 6 Constant Current Mode
Current (% of FLA)
Current
Limit
Time (Sec)
Constant Current
Adjustable 200-425%
500
400
300
200
100
FIGURE 7 Step Ramp Mode
Current (% of FLA)
Adjustable 200-425%
Current
Step
Limit
500
400
300
200
100
Step Ramp
Time (Sec)
3-30 Seconds
Ramp Time Adjustment
5.0 Set-Up Instructions
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