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
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
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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| 85 % | Actuator 2 off |
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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%.
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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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