Over Current Programming By External Voltage; Supervisory Signals (Typical Connection) - Tdk-Lambda Rfe2500 Serie Bedienungsanleitung

3.2.8

Over Current Programming by External Voltage

Over Current Protection (OCP) can be programmed by external voltage source 0~5V. By changing the Current
Programming Voltage OCP level could be decreased down to ~40% of Nominal Output Current.
3.2.9

SUPERVISORY Signals (Typical Connection)

The following supervisory signals are accessible:
• DC OK
• AC FAIL
• PS EXIST
TEMP ALARM
•
SIGNAL RETURN and mentioned signals are isolated from the output terminals and -SENSE.
These signals are Open Collector type (max 15V, max 10mA) shunted by internal 24V Zener, isolated from Output and
referenced to "SIGNAL RETURN".
Figure 3–14:
RFE2500
CURRENT PROG.
-SENSE
Figure 3–11: Current Programming by Ext. Voltage
Icl / Irated Current Limit Programming
120%
100%
80%
60%
40%
20%
0
0 1 2
Figure 3–12: Current Limit Programming
RFE2500
+12V AUX J1-20
10kΩ 10kΩ
DC OK J1-7
AC FAIL J1-16
TEMP ALARM J1-6
SIGNAL RETURN J1-8
Figure 3–13:
Open collector signals are shunted by internal 24V Zener
J1-4
+
0~5V
J1-1
3 4
5
VOLTAGE PROG [V]
10kΩ
Signals
15