Function Manual

1. Remote ON/OFF Control

The PSU can be turned ON/OFF together or separately by using the "Remote ON/OFF" function.

2.1 Remote Sense

The remote sense compensates voltage drop on the load wiring up to 0.5V.

2.2 Local Sense

Notice : The +S,-S have to be connected to the +V,-V terminals locally in order to get the correct output voltage if the remote sensing is not used.

Between ON/OFF and +5V-AUX

SW Open

SW Short

Output

OFF

ON

+5V-AUX

+5V-AUX

ON/OFF A

+V

-V

ON/OFF A

ON/OFF B

ON/OFF B

ON/OFF C

+S

-S

ON/OFF C

RKP-1U

RKP-1U

RKP-1U

1

24

25

1

77

16

22

23

16

13

13

2. Voltage Drop Compensation

-V

+V

RKP-1U

+S

-S

LOAD

-V

+V

3. Output Voltage TRIM

22

23

Sense lines should be twisted in pairs

(1)Connecting an external DC source between PV(4,10,19) and -V(25) on CN500 that is shown in Fig. 3.1.

(2)Adjustment of output voltage is possible between 90~110%(Typ.) of the rated output which is shown in Fig. 3.2. Reducing output current is required when the

output voltage is trimmed up.

Fig. 3.1 Add on 0~5V external voltage

Fig. 3.2 Output voltage trimming

90

80

70

100

110

V

100

90

80

70

60

OUTPUT VOLTAGE (%)

PV

4,10,19

25

0~5V

-V

60

70

80

EXTERNAL VOLTAGE(DC)

90

100

110

Vout

0.5

0

1.5

3

4.5

5

V

File Name:RKP-1U RACK SYSTEM-SPEC 2011-05-09

2000~6000W Front End Power System

RKP-1U Rack System

Function

AC-OK

AC-NG

DC-OK

DC-NG

T-OK

T-ALARM

LED

GREEN

RED

GREEN

RED

GREEN

RED

Description

When input voltage

87V

When input voltage

75V

When output voltage

80%

5% of Vo rated.

When output voltage

80%

5% of Vo rated.

When the internal temperature (TSW1 & TSW2 short) is within safe limit

When the internal temperature (TSW1 or TSW2 open) exceeds the limit of temperature alarm

4. Front Panel Indicators & Corresponding Signal at Function Pins

Signal

0~0.5V

4.5 ~ 5.5V

0~0.5V

4.5 ~ 5.5V

0~0.5V

4.5 ~ 5.5V

PSU Output

ON

OFF

ON

ON

ON

OFF

*

*Signal between function pin and "GND-AUX".