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159
EX1200-2001 with six (6) relays closed
EX1200-3048 with ten (10) relays closed
EX1200-3608
From the
Plug-in Module Power Consumption
section, the amount of current used by the switch
card’s relays can be calculated and added to the total consumption on the 5 V rail:
I
5V
(EX1200-2001)
= card’s consu (number of relays closed)(relay consumption)
I
5V
(EX1200-2001)
= 0.0037 A + (6)(75 mA)
I
5V
(EX1200-2001)
= 0.454 A
I
5V
(EX1200-3048)
= 0.0041 A + (10)(23 mA)
I
5V
(EX1200-3048)
= 0.234 A
With the switch card’s total power consumption calculated on the 5 V rail, consumption for each
rail can be calculated:
P
24V
= 24 V x [
I
24V
(EX1200-3608)
+
I
24V
(EX1200-2001)
+
I
24V
(EX1200-3048)
]
P
24V
= 24 V x (1.4 A + 0 A + 0 A)
P
24V
= 33.6 W
P
5V
= 5 V x [
I
5V
(EX1200-3608)
+
I
5V
(EX1200-2001)
+
I
5V
(EX1200-3048)
]
P
5V
= 5 V x (1.000 A + 0.454 A + 0.234 A)
P
5V
= 8.44 W
P
3.3V
= 3.3 V x [
I
3.3V
(EX1200-3608)
+
I
3.3V
(EX1200-2001)
+
I
3.3V
(EX1200-3048)
] / 80% efficiency
P
3.3V
= 3.3 V x (0.300 A + 0.131 A + 0.129 A) / 80% efficiency
P
3.3V
= 2.31 W
To verify that this is a valid configuration, the values can be substituted into the criteria above:
1)
P
24V
+ P
5V
+ P
3.3V
≤
120 W → 33.6 W + 8.44 W + 2.31 W
≤
120 W (True)
P
24V
+ P
3.3V
≤
84 W
→ 33.6 W + 2.31 W
≤
84 W
(True)
P
5V
≤
75 W
→ 8.44 W
≤
75 W
(True)
P
3.3V
≤
24 W
→ 2.31 W
≤
24 W
(True)
The remaining power for this mainframe is 75.65 W for additional cards to draw from.
Содержание EX1200A SERIES
Страница 16: ...VTI Instruments Corp 16 EX1200A Series Introduction EX1200A SERIES 1 U FULL RACK MAINFRAME DIMENSIONAL DIAGRAM...
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Страница 50: ...VTI Instruments Corp 50 EX1200A Series Preparation for Use...
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Страница 108: ...VTI Instruments Corp 108 EX1200A Triggering FIGURE 6 1 EX1200A SERIES TRIGGER MODEL...
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