TOA Electronics FPS-S1U, FPS-T1U Dcok signal, ACFail signal, Remote On/Off control, FPS10004.7KΩ

4.8 DC_OK signal

An open collector output provides a low output voltage detection signal. The open collector output is on when the output voltage is higher than 80%+/-5% of the rated output voltage of the power supply.

The open collector output is referenced to the Signals_Return potential and is isolated from the power supply +V and -V terminals

The maximum sink current is 10mA and the maximum external voltage is 15V. Refer to Fig 4-3 for typical application.

FPS1000

Fig 4-3

16

9

10

12V aux

10KΩ

DC_OK

Signals return

4.9 AC_Fail signal

An open collector output provides a low AC input voltage detection signal. The open collector output is on when the input voltage is 85Vac or higher.

The open collector output is referenced to the Signals_Return potential and is isolated from the power supply +V and -V terminals

The maximum sink current is 10mA and the maximum external voltage is 15V. Refer to Fig 4-4 for typical application.

16

FPS1000

11

10

Fig 4-4

12V aux

10KΩ

AC_Fail signal

Signals return

4.10 Remote On/Off control

A Remote On/Off control input is provided. The Remote On/Off input is isolated from the power supply +V and -V terminals and is referenced to the Signals_Return potential. The Remote On/Off can be operated either by electrical signal or by dry contact.

(1)Operation by electrical signal: 0~0.6V: Output is On. 2~15V: Output is Off.

The maximum sink current is 2.6mA and the maximum external voltage is 15V.

(2) Operation by dry contact (relay or switch):

Short between On/Off input and Signals Return: Output is On.

Open circuit between On/Off input and Signals Return: Output is Off.

When the Remote On/Off function is not used, connect a short circuit between the On/Off control and the Signals_Return. Refer to Fig 4-5 for the remote On/Off circuit description:

16

FPS10004.7KΩ

7

10

Fig 4-5

12V aux

I source 2.6mA max, 15Vdc max.

On/Off control

Signals return

12