SECTION 4 ADJUSTMENTS
Time Delay Adjustment
Standard time delays are set to customer specifications (if none specified, standard factory settings are used).
To change a setting, follow procedure on page
Table 4-1. Time Delay Settings
DESCRIPTION
LABELS
FACTORY ADJUSTMENT
SETTING RANGE
S3 DIP SWITCH
ADJUSTMENT
POTENTIOMETER
Override Momentary | TD ES | 3 seconds | 1 second | Actuator 1 on |
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Normal Source Outages |
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3 seconds | Actuator 1 off |
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Transfer to Emergency | TIMER | 0 minutes | 0 to 5 | — |
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N/E | (full ccw) | minutes |
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Override Momentary | — | 4 seconds | — |
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Emergency S. Outages |
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Retransfer to Normal | TIMER | 30 minutes | 1 second to | — |
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E/N | (full cw) | 30 minutes |
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Unloaded Running | — | 5 minutes | — |
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(Engine Cooldown) |
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Sensor Adjustments
Voltage and frequency sensor pickup and dropout points are set to customer specifications (if none specified, standard factory settings are used). To change a setting, follow procedure on page
Table 4-2. Voltage and Frequency Settings. ( 
NOTICE
Any change in these settings may affect the normal operation of the automatic transfer switch. This change could allow the load circuits to remain connected to a low voltage source.
Shaded DIP switches are standard factory settings).
DESCRIPTION | LABELS | SETTING |
| % of nominal | S1 DIP | |||
| FACT. SET | ADJ RANGE | SWITCH | |||||
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| PU / N | Pickup | 90 % | 95 % * | Actuator 3 off |
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| 90 % | Actuator 3 on |
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| 90 % * | Actuator 1 off |
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Normal Source Voltage |
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| 85 % | Actuator 1 on |
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| DO / N | Dropout |
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| 80 % | Actuator 1 off |
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| 70 % | Actuator 1 on |
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Emergency Source | – – | Pickup | 90 % | – – | ||||
Voltage | – – | Dropout | 75 % | |||||
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| – – | Pickup | 95 % | – – | ||||
Emergency Source | – – | Dropout | 85 % | |||||
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| 60 Hz | Actuator 4 off | |||
Frequency | 60 / 50 | 60 / 50 Hz | 60 Hz | |||||
| Hz | 50 Hz | Actuator 4 on | |||||
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Voltage Phases | 3, 1 | 3 / 1 |
| 3 | 3 phase | Actuator 6 off | ||
| 1 phase | Actuator 6 on | ||||||
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* If dropout voltage is set to 90%, the pickup voltage must be set to 95%.
3 3 1 2 1 2 1 2 1 2
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Table
(Low setting shifts all voltage settings down 4.2%; for example, 240 V to 230 V, or 480 V to 460 V)
DESCRIPTION | LABELS | FACTORY SETTING | ADJUSTMENT | S3 DIP SWITCH | |||
Voltage Adjust (4.2%) | LOW / | HI | LOW | Actuator 2 off |
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HI | HI | Actuator 2 on |
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