21
Pin
No.
Signal name
Function
15
CHA EXT
CC CONTROL IN
Constant-current control input pin of the channel
A.
Control from approx. 0 to the rated output current
at 0V to 10V in the external voltage control mode.
Control from approx. 0 to the rated output current
at 0k
Ω
to 10k
Ω
in the external resistance control
mode.
16
CHA COM
COM pin of the channel A.
Connected with the negative output terminal of
the channel A.
17
CHA EXT V MON OUT
Output voltage monitor pin of the channel A.
Outputs approx. 0V to 10V for 0 to the rated
output voltage.
18
CHA EXT A MON OUT
Output current monitor pin of the channel A.
Outputs approx. 0V to 10V for 0 to the rated
output current.
19
CHA COM
COM pin of the channel A.
Connected with the negative output terminal of
the channel A.
20
CHA EXT ALARM IN
Causes the alarm status when
short-circuited with the CHA COM pin.
21
CHA EXT OUTPUT IN
Turns on output when short-circuited with the
CHA COM pin.
22
CHA COM
COM pin of the channel A.
Connected with the negative output terminal of
the channel A.
23
CHA
EXT CV STATUS OUT
Open collector output. Set to the L level when
the channel A is in the CV mode.
24
CHA
EXT CC STATUS OUT
Open collector output. Set to the L level when
the channel A is in the CC mode.
25
CHA ALARM OUT
Open collector output. Set to the L level when
the channel A is in the alarm mode.
26
CHA STATUS COM
(COM of 23, 24 & 25)
COM of pins 23, 24 and 25.
Pins 1 to 13 are not used on the PSF-400L and PSF-800L.
24. Sensing terminals
Used to change the sensing point. Short-circuited before shipment to
select the internal sensing.
◆
See section
“5-6. Output Voltage Remote Sensing” below.
25. Rear output terminals
Power of the PSF Series power supply unit is output through these
terminals. The channel A terminal block is in the upper position
(CHA) and the channel B terminal block is in the lower position (CHB)
when the unit is viewed from the back. On each terminal block, the
positive (
＋
) terminal is on the left and the negative (
－
) terminal is on
the right when the unit is viewed from the back. Connect either
output terminal with the screw with the
mark near the terminal
block if it need be grounded with the frame.
