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User Manual PS 285 / Issue 1 © 2004 ASL Intercom, Utrecht, The Netherlands.
Page 1: ... 4 5 0 SET UP 4 6 0 FRONT PANEL CONTROLS 5 7 0 REAR PANEL CONTROLS AND CONNECTORS 6 8 0 CABLING 7 9 0 PARTY LINE TECHNICAL CONCEPT 8 10 0 GUARANTEE 8 11 0 TECHNICAL SPECIFICATIONS 8 User Manual PS 285 Issue 1 2004 ASL Intercom Utrecht The Netherlands Pro series Intercom PS 285 Power Supply Booster over load Power CHANNEL A CHANNEL B On Standby On Standby ...
Page 2: ...2 User Manual PS 285 Issue 1 2004 ASL Intercom Utrecht The Netherlands ...
Page 3: ...285 Mains power cable Spare fuses User manual If any are missing contact your dealer With the PS 285 will be a small packet of spare fuses Please keep them in a safe place There is also one spare fuse included in the mains inlet ASL has taken great care to ensure that this product reaches you in flawless condition After unpacking the unit please inspect for any physical damage to the unit and reta...
Page 4: ...rd to the rear of the station Plug the other end of the power cord into a PROPERLY GROUNDED outlet Turn on the power with the red button The red overload LED will light up for about 3 seconds then extinguishes The yellow LEDS will go on indicating the station is standby When a powered partyline is connected to the intercom line input the green LED will go on indicating the station is active See fo...
Page 5: ...huts off line power This circuit breaker resets automatically 3 seconds after the overload situition is terminated restoring line power automatically During short circuit the overload LED extinguishes very shortly every 3 seconds This overload LED also comes on every time you switch on the main power 3 ON LED This LED illuminates if a partyline is connected to the intercom input and the unit suppl...
Page 6: ... one connector for channel A and one connector for channel B Pin assignments are like the output connector 7 FUSE This fuse protects the PS 285 against severe internal damage in case of malfunction in the power section To remove the fuse the mains cord must be removed It is most important to place the correct fuse in the holder mains voltage fuse 90 240 VAC T 1250 mA Spare fuses will be found in t...
Page 7: ...nected and at one point the central earthing point in the intercom network only be connected to a clean safety earth See page 12 for Earthing Concept Keep metal connection boxes and cable trunks isolated from other metal parts Metal housings for intercom cables and connectors should be mounted in such a way that they are isolated from other metal cable and connector housings and from any other met...
Page 8: ...io line It develops a DC potential over the line impedance which will be sensed by each station and interpreted as a Call signal 10 0 GUARANTEE This unit is warranted by ASL Intercom to the original end user purchaser against defects in workmanship and materials in its manufacture for a period of one year from the date of shipment to the end user Faults arising from misuse unauthorised modificatio...
Page 9: ... PS 285 Issue 1 2004 ASL Intercom Utrecht The Netherlands 9 2 2 2 2 3 3 3 3 1 1 1 1 ON Switched mode power supply Fuse 1 25A Mains switch L N earth Block diagram PS 285 C 2004 ASL intercom BV Power control circuit ...
Page 10: ...10 User Manual PS 285 Issue 1 2004 ASL Intercom Utrecht The Netherlands PS 19 PS 285 PS 19 PS 29 PS 19A PGM PS 278 2 CHANNEL INTERCOM NETWORK WITH BOOSTER A B IS 140 AUX ...
Page 11: ...User Manual PS 285 Issue 1 2004 ASL Intercom Utrecht The Netherlands 11 ...
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