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PSD1206 - PSD1210
INSTRUCTION MANUAL
INSTRUCTION MANUAL
SIL 3 - SIL 2 Switching Power Supply
24Vdc, 6A, 150W Output, Zone 2/Div. 2
DIN-Rail Mounting Model PSD1206
SIL 3 - SIL 2 Switching Power Supply
24Vdc, 10A, 250W Output, Zone 2/Div. 2
DIN-Rail Mounting Model PSD1210
PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc
ISM0076-7
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Related Manuals for GM International PSD1210
Summary of Contents for GM International PSD1210
- Page 1 24Vdc, 6A, 150W Output, Zone 2/Div. 2 DIN-Rail Mounting Model PSD1206 SIL 3 - SIL 2 Switching Power Supply 24Vdc, 10A, 250W Output, Zone 2/Div. 2 DIN-Rail Mounting Model PSD1210 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc ISM0076-7...
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Page 2: Table Of Contents
Zone 2 / Division 2 Hazardous Area / Hazardous Location. PSD1206 provides 24 Vdc nominal with 6 A output current and isolation between input - output - ground (2000 V). PSD1210 provides 24 Vdc nominal with 10 A output current and isolation between input - output - ground (2000V). These supply units can be paralleled for redundancy operation to increase availability upgrading the system from SIL 2 to SIL 3 or to increase the output power. -
Page 3: Ordering Information
NON HAZARDOUS LOCATIONS, CLASS I, DIVISION 2, GROUPS A, B, C, D T-Code T3, CLASS I, ZONE 2, GROUP IIC T3 MODELS PSD1206 - PSD1210 SIL 2 L/+ N/- 24 Vdc Fault Supply Output Output Input G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc... -
Page 4: Warning
Non-incendive field wiring is not recognized by the Canadian Electrical Code, installation is permitted in the US only. For installation of the unit in a Class I, Division 2 or Class I, Zone 2 location, the wiring between the control equipment and the PSD1206, PSD1210 shall be accomplished via conduit connections or another acceptable Division 2, Zone 2 wiring method according to the NEC and the CEC. -
Page 5: Operation
IIB, IIA Temperature Code T3 Hazardous Area/Hazardous Locations ensuring that the relevant safety installation conditions are respected. PSD1206 provides a 6 A, 150 W output capability while the PSD1210 provides a 10 A, 250 W output capability. The power supply has a switching input and a power factor correction circuit resulting in a high efficiency module. -
Page 6: Start-Up
Functional Safety Manual for Safety Related Systems and SIL2, SIL3 Applications This Safety Manual summarizes the results of hardware assessment carried out on the PSD1206, PSD1210 Power Supply. The failure rates used in this analysis are the basic failure rates from the Siemens standard SN 29500. According the table 2 of IEC 61508-1, the average PFD for systems operating in low demand mode has to be ≥ 1.00 E-03 to < 1.00 E-02 for SIL 2 safety functions. -
Page 7: Functional Safety Specifications From Exida Analysis And Report According Iec 61508 - Iec 61511
When calculating the SFF this failure mode is not taken into account. It is also not considered for the total failure rate evaluation. G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc... -
Page 8: General Terms
T Proof Test & Maintenance (TI): Proof Test Interval (for example 1 - 5 - 10 years, with 1 year = 8760 hours). Maintenance time is considered 8 hours. Assumptions The following assumptions have been made during the Failure Modes, Effects, and Diagnostic Analysis of the Switching Power Supply Types PSD1206 and PSD1210. •... -
Page 9: Summary Of Data From Exida
See Note 8 and Note 9 See Note 7 in the section Notes See Note 7 in the section Notes In the section Notes In the section Notes G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc... - Page 10 Both PSD12xx fail because of & common cause (ß = 5 %) First PSD12xx Second PSD12xx fails undetected fails undetected PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc G.M. International ISM0076-7...
- Page 11 Valid for SIL 2 See Note 1 in the section Notes See Note 1 in the section Notes See Note 2 in the section Notes G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc...
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Page 12: Notes
PSD1206, PSD1210 Isolated Power Supply, fail with over voltage condition One way to calculate the probability that the Power Supply types PSD1206 and PSD1210 fail with an over voltage condition is by using the fault tree as presented in following figure: Over voltage condition &... - Page 13 Output Bus Fault Supply Fault Supply Output 1 Input 1 Output 2 Input 2 Draft about connection of 2 units PSD1210 in parallel mode. G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc...
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Page 14: Possible Proof Tests To Reveal Dangerous Undetected Faults
V1, V2, V3 300 W variable resistor load, from 2 to 25 Ω, current up to 10 A to test PSD1210 or 150 W variable resistor load, from 4 to 25 Ω, current up to 6 A to test PSD1206... - Page 15 Regulate the second’s power supply voltage (V2) by rotating its “Vout Adjust” trimmer counter-clockwise, until obtaining 24 V Turn off both power supplies G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc...
- Page 16 Check that voltage (V2) between the diodes is between -22 V and -26 V Turn off also the second PS and disconnect voltmeter V2 from the “Out diodes” pins of the “overvoltage crowbar test jig” PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc G.M. International ISM0076-7...
- Page 17 Turn off the PS immediately by opening the supply switch (I1) so that the “crowbar” is reset Rotate potentiometer (P1) clockwise completely to obtain maximum resistance G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc...
- Page 18 Turn off the PS immediately by opening the supply switch (I1) so that the “crowbar” is reset Rotate potentiometer (P1) clockwise completely to obtain maximum resistance PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc G.M. International ISM0076-7...
- Page 19 Verify that the output voltage (V1) is between 25.5V and 28V nominal at 80% of full load and without load Turn off the PS G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc...
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Page 20: Impact Of Lifetime Of Critical Components On Failure Rate
MODELS PSD1206 - PSD1210 SIL 3 L/+ N/- L/+ N/- 48 Vdc Output Bus Fault Supply Fault Supply Output 1 Input 1 Output 2 Input 2 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc G.M. International ISM0076-7... -
Page 21: 48 Vdc Output With 100 % Redundance
Input 3 Fault Output 3 Current Sharing SIL 3 MODELS PSD1206 - PSD1210 Supply Input 4 Fault Output 4 Current Sharing SIL 3 G.M. International ISM0076-7 PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc... -
Page 22: Side A Configuration
Finally rotate the “Vout Adjust” trimmer until the output voltage has reached the new requested value of 25 V. Current Sharing 24 Vdc Output Fault Output Supply Line PSD1206 - PSD1210 - SIL 3 - SIL 2 Switching Power Supply 24 Vdc G.M. International ISM0076-7... -
Page 23: Side B Configuration
Maintenance and Repair PSD1206 and PSD1210 do not require any particular maintenance under normal operating conditions. They are designed to operate trouble free and with high stability for long time. If a unit is found not meeting specifications or in a failure condition then it requires recalibration or servicing. Any repair made by unauthorized personnel may completely invalidate the safety characteristics of the unit.
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