5
D5202S
- 4 A, 24 Vdc, SIL 3 Power Distribution and Diagnostic Module
G.M. International ISM0177-4
Functional Safety Manual and Applications
Application for D5202S (Redundant Power Supply)
OFF operation (No supply on power bus)
ON operation (20÷30 Vdc Supply on Power Bus)
D5202S
OFF state
OFF state
20÷30 Vdc
Power
Supply 1
20÷30 Vdc
Power
Supply 2
D5202S
9 +
10 -
11 +
12 -
- +
ON state
OFF state
20÷30 Vdc Supply (PS1)
on Power Bus
20÷30 Vdc
Power
Supply 1
20÷30 Vdc
Power
Supply 2
D5202S
OFF state
ON state
20÷30 Vdc
Power
Supply 1
20÷30 Vdc
Power
Supply 2
D5202S
ON state
20÷30 Vdc
Power
Supply 1
20÷30 Vdc
Power
Supply 2
ON state
- +
20÷30 Vdc Supply (PS2)
on Power Bus
9 +
10 -
11 +
12 -
- +
20÷30 Vdc Supply on Power Bus
(the biggest voltage between PS1 and PS2)
9 +
10 -
11 +
12 -
- +
No Supply
on Power Bus
9 +
10 -
11 +
12 -
D5202S Operation
Power Suppy 1 source state
Pins 9(+) - 10(-)
PWR1 LED state Power Suppy 2 source state
Pins 11(+) - 12(-)
PWR2 LED state
OFF (absence of supply on Power Bus)
OFF
OFF
OFF
OFF
ON (presence of 20÷30 Vdc supply PS1 on Power Bus)
ON (20÷30 Vdc source)
ON
OFF
OFF
ON (presence of 20÷30 Vdc supply PS2 on Power Bus)
OFF
OFF
ON (20÷30 Vdc source)
ON
ON (presence of 20÷30 Vdc supply on Power Bus,
the biggest voltage between PS1 and PS2 voltage)
ON (20÷30 Vdc source)
ON
ON (20÷30 Vdc source)
ON
Description:
Power Supply 1 source (20÷30 Vdc) is applied to Pins 9(+) - 10(-) and Power Supply 2 source (20÷30 Vdc) is applied to Pins 11(+) - 12(-).
The following table describes the OFF operation (absence of supply on Power Bus) and the ON operation (presence of 20÷30 Vdc supply on Power Bus) of the D5202S,
according to the OFF / ON state of each Power Supply source (also shown by related PWR LED state):
Considering all diagnostic functions enabled, the power supply diagnostic functionality is shown in the following table, which describes the status (open or closed) of each
1oo2 Power Fault output contact and the state of FLT1 or FLT2 Fault LED according to the voltage of each Power Supply source:
Supply Voltage
on Power Bus
Power Suppy 1 voltage
Pins 9(+) - 10(-)
FLT1
LED state
Power Suppy 2 voltage
Pins 11(+) - 12(-)
FLT2
LED state
1oo2 Power Fault -
NO contact , Pins 5-6
1oo2 Power Fault -
NC contact , Pins 5-7
The biggest voltage between
PS1 and PS2 voltage
(Normal condition)
> 18 Vdc ; < 30 Vdc
(Normal condition)
OFF
> 18 Vdc ; < 30 Vdc
(Normal condition)
OFF
Closed
(Normal condition)
Open
(Normal condition)
Equal to PS2 voltage (but Preventive
Fault condition due to PS1 Fault)
< 18 Vdc
(Fault condition)
ON
> 18 Vdc ; < 30 Vdc
(Normal condition)
OFF
Open
(Fault condition)
Closed
(Fault condition)
Equal to PS1 voltage (but Preventive
Fault condition due to PS2 Fault)
> 18 Vdc ; < 30 Vdc
(Normal condition)
OFF
< 18 Vdc
(Fault condition)
ON
Open
(Fault condition)
Closed
(Fault condition)
Equal to PS1 voltage (Critical Fault
condition due to PS1 Fault)
> 30 Vdc
(Fault condition)
ON
> 18 Vdc ; < 30 Vdc
(Normal condition)
OFF
Open
(Fault condition)
Closed
(Fault condition)
Equal to PS2 voltage (Critical Fault
condition due to PS2 Fault)
> 18 Vdc ; < 30 Vdc
(Normal condition)
OFF
> 30 Vdc
(Fault condition)
ON
Open
(Fault condition)
Closed
(Fault condition)
