DF56 – Power Supply for Backplane 20 – 30 Vdc
7
DFI302 Power Budget
Module
Description
Qty.
Consumption
Unit Power (mA)
Total Power (mA)
Supply
Unit Power (mA)
Total Power (mA)
@24 V
@5 V
@24 V
@5 V
@24 V
@5 V
@24 V
@5 V
DF45
8 Temperature inputs
0
55
0
0
DF21
16
DO
(transistor)
65
70
0 0
DF22
2*8
DO
(transistor)
65
70
0 0
DF23
8
DO
(triac)
0 70 0 0
DF24
2*8
DO
(triac)
0 115 0 0
DF25
2*4
DO
(relay)
134
20
0 0
DF26
2*4
DO
(relay)
134
20
0 0
DF27
2*4
DO
(relay)
134
20
0 0
DF28
2*8
DO
(relay)
180
30
0 0
DF29
2*4
DO
(relay)
134
20
0 0
DF30
2*4
DO
(relay)
134
20
0 0
DF31
2*4
DO
(relay)
134
20
0 0
DF46
4
AO
180
20
0 0
DF32
8 DI 24 Vdc, 4 DO (relay)
67
60
0
0
DF33
8 DI 48 Vdc, 4 DO (relay)
67
60
0
0
DF34
8 DI 60 Vdc, 4 DO (relay)
67
60
0
0
DF35
8 DI 24 Vdc, 4 DO (relay)
67
60
0
0
DF36
8 DI 48 Vdc, 4 DO (relay)
67
60
0
0
DF37
8 DI 60 Vdc, 4 DO (relay)
67
60
0
0
DF38
8 DI 24 Vdc, 4 DO (relay)
67
60
0
0
DF39
8 DI 48 Vdc, 4 DO (relay)
67
60
0
0
DF40
8 DI 60 Vdc, 4 DO (relay)
67
60
0
0
DF49
2 Fieldbus Power Impedance
750
0
0
0
DF53
4 Fieldbus Power
Impedance
1
1500 0 1500 0
TOTAL
4
1500
1074
DF50
1
300
3000
300
3000
DF52
1
1500
0
1500
0
TOTAL
6
1800
3000
Power supplies positioning
For systems based on DF92 and DF93 racks with DF90 and DF91
A power supply connected to a rack, in a system, provides current to the racks row that are
horizontally interconnected to it by their terminals of lateral connections, and vertically through DF90
cables, thus forming a group of rows of racks that use the same power supply.
The system can have only one power supply (or pair of redundant power supplies) or it can be
subdivided in several of these groups
1
, each one powered by a power supply (or pair of redundant
power supplies).
The recommended way to distribute the power is to divide the system in groups of horizontal rows of
racks. In this scheme, each power supply must be positioned on the top left of the group of rows of
racks that it powers. The rack were is the power supply must be the
W1
jumper cut and the DF90
cable must not be connected to the rows powered by other power supplies (top rows). See in the
following figure an example of system powered by two power supplies, each one powers a part of
rows represented in green and blue.
1
Maximum 8 groups allowed when the DF56 power supplies are used.
