Starting the system – Xylem IM213R04 S-Drive Constant Pressure Aquavar SPD Variable Speed Pump Control User Manual
Page 16
Page 16
Section 7
(continued)
Setting the Motor Overload Switches
The Motor Overload Setting Switches adjust the level of motor overload current
protection necessary to protect the motor in case of an over current condition.
Bank 1 switches 1, 2 and 3 allow adjustment of the motor overload setting. These
switches adjust the motor overload protection as a percentage of the full load
output current rating of the controller. Choose a motor overload setting that meets
or is less than the motor’s SFA rating. For example, if the full load output current
rating of the controller is 37A and the motor SFA rating is 33A, the motor overload
setting should be set to 85% (33A/37A = 89%, next lowest setting is 85%).
In applications where the pump and motor are not used to the full capacity the
system may not draw current close to the motor’s SFA rating. In this case choose a
motor overload setting that is close to the actual full load running current.
NOTE
If single phase input power is used the motor overload switches must be set to
50% or lower or nuisance input phase loss errors can result.
The chart below shows the motor overload setting for each model.
STARTING THE SYSTEM
Supply
Voltage
Frame
Size
Model
Number
Motor Overload Setting
100%
95%
90%
85%
80%
70%
50%
40%
208/230
1
SPD20050
17.8
16.9
16.0
15.1
14.2
12.5
8.9
7.1
SPD20050F
2
SPD20075
26.4
25.1
23.8
22.4
21.1
18.5
13.2
10.6
SPD20075F
SPD20100
37.0
35.2
33.3
31.5
29.6
25.9
18.5
14.8
SPD20100F
3
SPD20150
47.4
45.0
42.7
40.3
37.9
33.2
23.7
19.0
SPD20150F
SPD20200
60.6
57.6
54.5
51.5
48.5
42.4
30.3
24.2
SPD20200F
4
SPD20250
76.0
72.2
68.4
64.6
60.8
53.2
38.0
30.4
SPD20250F
SPD20300
94.0
89.3
84.6
79.9
75.2
65.8
47.0
37.6
SPD20300F
460
1
SPD40050
8.9
8.5
8.0
7.6
7.1
6.2
4.5
3.6
SPD40050F
SPD40075
13.2
12.5
11.9
11.2
10.6
9.2
6.6
5.3
SPD40075F
2
SPD40100
18.5
17.6
16.7
15.7
14.8
13.0
9.3
7.4
SPD40100F
SPD40150
23.7
22.5
21.3
20.1
19.0
16.6
11.9
9.5
SPD40150F
SPD40200
30.3
28.8
27.3
25.8
24.2
21.2
15.2
12.1
SPD40200F
3
SPD40250
37.5
35.6
33.8
31.9
30.0
26.3
18.8
15.0
SPD40250F
SPD40300
47.0
44.7
42.3
40.0
37.6
32.9
23.5
18.8
SPD40300F