Emerson ASCO 300 Series, Руководство оператора

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SECTION 4 ADJUSTMENTS
4---1
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 4-2. Use
Table 4-1 as a guide to time delay values and their corre-
sponding adjustment DIP switch or potentiometer.
Table 4-1. Time Delay Settings
DESCRIPTION LABELS
FACTORY
SETTING
ADJUSTMENT
RANGE
S3 DIP
SWITCH
ADJUSTMENT
POTENTIOMETER
Override Momentary
TD ES 3 seconds
1 second Actuator 1 on
1
Override Momentary
Normal Source Outages
TD ES 3 seconds
3 seconds Actuator 1 off
1
—
Transfer to Emergency
TIMER 0 minutes 0 to 5
P2 Transfer to Emergency
TIMER
N/E
0 minutes
(full ccw)
0 to 5
minutes
— — P2
Override Momentary
Emergency S. Outages
— 4 seconds non-adjustable — — —
Retransfer to Normal
TIMER 30 minutes 1 second to
P1 Retransfer to Normal
TIMER
E/N
30 minutes
(full cw)
1 second to
30 minutes
— — P1
Unloaded Running
(Engine Cooldown)
— 5 minutes non-adjustable — — —
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 4–2. Use Tables 4-2 and 4–3 for
settings and corresponding DIP switch actuators.
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.
Table 4-2. Voltage and Frequency Settings. ( Shaded DIP switches are standard factory settings).
DESCRIPTION LABELS SETTING
% of nominal
S1 DIP
DESCRIPTION LABELS SETTING
FACT. SET ADJ RANGE
S1 DIP
SWITCH
PU / N Pickup 90 %
95 % * Actuator 3 off
3
PU / N Pickup 90 %
90 % Actuator 3 on
3
90 % *
Actuator 1 off
Actuator 2 off
2
1
Normal Source Voltage
DO / N Dropout
85 %
85 %
Actuator 1 on
Actuator 2 off
2
1
DO / N Dropout
85 %
80 %
Actuator 1 off
Actuator 2 on
2
1
70 %
Actuator 1 on
Actuator 2 on
2
1
Emergency Source
– – Pickup 90 % non-adjustable
Emergency Source
Voltage
– – Dropout 75 % non-adjustable
– –
– – Pickup 95 % non-adjustable
Emergency Source
– – Dropout 85 % non-adjustable
– –
Emergency Source
Frequency
60 / 50
60 / 50 Hz 60 Hz
60 Hz Actuator 4 off
4
eque cy
60 / 50
Hz
60 / 50 Hz 60 Hz
50 Hz Actuator 4 on
4
Voltage Phases 3 1 3 / 1 3
3 phase Actuator 6 off
6
Voltage Phases 3, 1 3 / 1 3
1 phase Actuator 6 on
6
* If dropout voltage is set to 90%, the pickup voltage must be set to 95%.
Table 4-3. Transformer Voltage Adjust.
(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
2
Voltage Adjust (4.2%)
LOW /
HI
HI
HI Actuator 2 on
2