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1. In case of No Output - what to check
2. In case of Abnormal Output Voltage(Too High, Too Low, Unstable) - what to check
COPYRIGHT(c) 2006 COSEL CO., LTD. ALL RIGHTS RESERVED.
1. In case of No Output - what to check
2. In case of Abnormal Output Voltage(Too High, Too Low, Unstable) - what to check
1. In case of No Output - what to check
| Output Side | |||
| Check Points | Solutions | Applicable Products | |
| 1)Wrong connection. 2)Loosened terminal screws. - 1 Is the wiring to the load correct? (For example, +V and -V are connected reversely). |
Correct the connection. | All Series | |
| 1)Wrong connection. 2)Loosened terminal screws. - 2 Check to see if the wiring to the load shorted together accidentally. |
Correct the problem by checking the wiring isolation. | ||
| 1)Wrong connection. 2)Loosened terminal screws. - 3 Terminal screws have loosened? |
Tighten the terminal screws. | ||
| Overvoltage protection has been operated. - 1 Is output voltage adjuster (trim pot) excessively turned clockwise? |
Switch off the power supply, turn output voltage adjuster to its maximum counterclockwise, and wait for 5 minutes before switching on the power supply again. | All Series | |
| Overvoltage protection has been operated. - 2 Sensing terminal screws have loosened? |
Tighten the screws. |
R100U, R150U, P100E-P(T)1500, UAW, UAF, PAA100F-PAA600F LDA300 | |
| Overvoltage protection has been operated. - 3 Is sensing wiring correct? |
Connect the sensing wires according to the instruction manual. | ||
| Overvoltage protection has been operated. - 4 Are sensing wires disconnected? |
Re-connected. | ||
| Overcurrent protection has been operated. Are there any chances that the drawing current has become greater than the rated output current? |
Check the rated output current of the power supply used and measure the current actually drawn from power supply. | All Series | |
| Remote ON/OFF is off. - 1 In case of AC/DC power supply: Is RC terminal connected to RCG terminal? |
Connect (short circuit) RC terminal to RCG terminal. | P300E,P600E, P(T)1500, PAA300F,600F | |
| Remote ON/OFF is off. - 2 In case of DC-DC power supply: Is RC terminal connected to -V input? |
Connect (short circuit) RC terminal to -V input. | ZUS, ZUW,DAS | |
| Power supplies used in series operation. Are the power supplies used allowed series operation? |
Change the power supplies to those allowed series operation. | Refer to instruction manuals. | |
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COPYRIGHT(c) 2006 COSEL CO., LTD. ALL RIGHTS RESERVED.
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