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Summary of Contents for GMI PSD1220
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Page 1: Din Rail Mounting
SIL 3 Power Supply PSD1220 and PSD1220-098 24Vdc, 20 A, Zone 2 DIN Rail Mounting G.M. International s.r.l. 20852 Villasanta MB Italy PSD1220 & PSD1220-098 - SIL 3 Power Supply, 24Vdc, 20 A, Zone 2, DIN Rail Mounting G.M. International ISM0370-3... -
Page 2: Table Of Contents
The Power Supply types PSD1220 and PSD1220-098 are anodized aluminum unit. The Power Supply provides 24Vdc, 20 A output. PSD1220 or PSD1220-098 unit can be paralleled, with load sharing circuits, which distribute current load equally to each power supply to increase reliability and reduce internal power dissipation. -
Page 3: Technical Data
Location: Safe Area or Zone 2, Group IIC T4 installation. Protection class: IP 20, Open Type. Dimensions: see drawings page 7. Maximum Output Current & Power vs. Ambient Operating Temperature G.M. International ISM0370-3 PSD1220 & PSD1220-098 - SIL 3 Power Supply, 24Vdc, 20 A, Zone 2, DIN Rail Mounting... -
Page 4: Active Ideal Diode-Or Circuit - Output Voltage Setting, Fault Indications
After under / over voltage fault, coming back to normal condition, the green Power ON LED is ON if output voltage is within 22.5 V - 27.5 V range. Warning PSD1220 and PSD1220-098 are isolated Switching Power Supply units located in Safe Area or Zone 2, Gas Group IIC, Temperature T4 Hazardous Area within the specified operating temperature limits -40°C ≤ Tamb ≤ +60°C and mounting conditions. -
Page 5: Functional Diagram For Psd1220
PSD1220, single AC supply, 1 redundant 20 A Output. two modules connected in parallel to provide one 20 A redundant output. G.M. International ISM0370-3 PSD1220 & PSD1220-098 - SIL 3 Power Supply, 24Vdc, 20 A, Zone 2, DIN Rail Mounting... -
Page 6: Functional Diagram For Psd1220-098
PSD1220-098 PSD1220-098 In this application, for each PSD1220-098, double wiring (on positive and negative output poles) is suggested between DC output connector and DC bus. PSD1220-098, single AC supply, 1 redundant 20 A Output. two modules connected in parallel to provide one 20 A redundant output. -
Page 7: Installation Procedure - 1St Step
Installation Procedure - 1st step: Installation on DIN-Rail into a cabinet of PSD1220 and PSD1220-098 The PSD1220 must only be installed on a DIN-Rail as oriented in the following drawing. All dimensions are in millimeters (mm). Not cover up-side output flows of air grid... - Page 8 Pull the power supply module upwards and remove from DIN-Rail Fig. 4 Fig. 3 Right side view Right side view Push to engage PSD1220 & PSD1220-098 - SIL 3 Power Supply, 24Vdc, 20 A, Zone 2, DIN Rail Mounting G.M. International ISM0370-3...
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Page 9: Installation Procedure - 2Nd Step (Only For Single Psd1220 Or Psd1220-098 Unit)
The following images shows the wiring of AC input, DC output, Fault contact output terminal blocks for a single PSD1220 or PSD1220-098, not used in parallel/redundant configuration. The unit must receive AC mains by means of a magnetic circuit breaker or switch with the following features: B or C characteristic 8÷10 Amps when nominal low input voltage 110÷120 Vac ±10% is used;... -
Page 10: Installation Procedure - 2Nd Step (Only For Psd1220 Or Psd1220-098 Units In Parallel/Redundant Configuration) - Section A
The following sub-step (pre-start up) must not be executed if each PSD1220 or PSD1220-098 output voltage factory setting to 24 Vdc is corrected for your applications. Instead, execute this sub-step (pre-start up) if it’s necessary to set up a different value for each PSD1220 or PSD1220-098 output voltage in the range 23.6 to 26.1 Vdc. -
Page 11: Section B
For correct current sharing operation, all PSD1220 or PSD1220-098 units used in parallel/redundant configuration must have their current sharing bus terminal blocks connected together by wiring. At page 5 (for PSD1220) or 6 (for PSD1220-098), it’s shown a functional diagram of two units, used in parallel/redundant configuration, where DC output and Current Sharing bus connections are shown.
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