© Siemens AG 2016
6/8
SITOP power flexi
A5E38522987, 11.2016
English
Signalling
LED does not light up
No supply voltage (e.g. upstream protection device has opened) or device is defective.
LED lights up green
The output voltage is within the tolerance.
LED lights up red
The device is working at the current limit (max. 10 A) or at the power output limit (max. 120 W).
Connection and terminal assignment of X1
(connected load: 0.5 to 2.5 mm
2
or 25 to 15 AWG)
Terminal
Designation
Function
X1-1
L1
Input voltage AC 120/230 V
X1-2
N
X1-3
PE
Protective conductor
X1-4
AC 120V -
Necessary jumper for the working range AC 85 to 132 V
X1-5
Jumper
X1-6
⊕
L+
Output voltage 3 to 52 V,
Max. output current 10 A (in the range 3 to 12 V), max. output power 120 W (in the range 12 to 52 V),
see figure output characteristic
X1-7
⊖
M
X1-8
Output characteristic
Connection and terminal assignment of X2
(connected load: 0.14 to 1.5 mm
2
or 25 to 15 AWG)
Terminal
Designation
Function
X2-1
(Jumper 1)
┐
┘
U
soll
If the jumper is fitted (as-delivered status), output voltage can be set by means of the potentiometer
U
A
(front). If jumper not fitted, remote setting of the output voltage by means of the voltage signal at terminal X2-
2 (signal ground terminal X2-9); here, a voltage signal of 0 to 2.5 V
DC
corresponds to an output voltage of 0 to
52 V
DC
.
X2-2
X2-3
Sense +
Sense cable connection: enables compensation of voltage drops due to cable resistance. Maximum voltage
correction 0.5 V per cable. More details see figure 2 sense connection (page 7).
X2-4
Sense −
X2-5
UH
Terminal not assigned at the present time (without any function)
X2-6
Power Good
Power-good signal: floating relay contact is closed if the output voltage is within the tolerance (closed-circuit-
current principle). For technical functioning see figure 1 timing-diagram (page 7)
X2-7
X2-8
Reset
Reset signal: Open-collector (30 V, 20 mA); is activated when the voltage at the input falls below the
minimum voltage and is set at least 1 ms before breakdown of the output voltage (signal ground terminal X
2-9). For technical functioning see figure1 timing diagram (page 7).
X2-9
Ground
Ground connection for signals at terminal X2-2, X2-8, X2-10 or X2-12.
X2-10
I
ist
Current monitor signal: 2.5 V typically correspond to an output current of 10 A +/- 5% in total current range
(signal ground X2-9).
X2-11
(Jumper 2)
┐
┘
I
soll
If the jumper is fitted (as-delivered status), output voltage can be set by means of the potentiometer
I
Amax
(front). If jumper is not fitted, remote setting of the current limit by means of voltage signal at terminal X2-12
(signal ground X2-9); here, a voltage signal of 0.5 - 2.5 V
DC
corresponds to a current limit of 2 to 10 A.
X2-12
0
10
20
30
40
50
60
0
2
4
6
8
10
12
Vo
lt
Ampere
1 )
2 )
1) Setting range output voltage
2) Setting range current limiting
