All parameters are specified at 24V, 2.5A, 230Vac input, 25ªC ambient and after a 5 minutes run-in time unless noted otherwise.
10
Rockwell Automation Publication 1606-RM032A-EN-P — April 2014
Bulletin 1606 Switched Mode Power Supplies
10. Remote Control of Output Voltage
The shut-down input can also be used to remotely adjust the output voltage between typically 28Vdc and 54Vdc. All
other functions of shut-down input remain the same.
The control voltage is referenced to the main ground (negative output voltage).
Fig. 10-1
Remote control of the output voltage
Fig. 10-2
Applying the control voltage
Output Voltage
24V
0V
5V
15V
28V
32V
36V
56V
40V
44V
52V
Control Voltage
48V
10V
20V
Potentiometer:
set to 54V
set to 48V
15
16
Control
Voltage
Shut-
down
Input
-
+
n.c.
Instructions:
1. Set the unit into “Single Use” mode.
2. Set the output voltage adjustment (48-54V) to the maximum desired voltage.
3. Apply a control voltage to reduce the output voltage.
11. Internal Data Logging
A protected microcontroller inside the power supply acquires and stores operating data during the life of the unit. The
data can be downloaded with a small tool and a special software by Rockwell Automation service and repair personnel,
even when the unit is failing. The data allows for better troubleshooting. Events occuring just before a failure can be
analyzed much more accurately.
The data will be acquired with a fixed sampling rate unless the peak detectors trigger due to an abnormal
condition. In such cases, the abnormal condition will be captured.
Acquired data:
- Family name of unit (1606-XLS), revision of firmware
- Operational hours and expired portion of lifetime
- Operational data; latest 60 values with timestamps of the last 158 minutes of:
Number
of
over-voltage
transients,
Average
input
voltage,
Peak
input
voltage,
Inside
temperature,
Overloads
>
2s,
Missing of one input phase (minimum output load required)
- Failure data; various errors such as:
Internal errors,
Over-temperature shut-down,
OVP,
Long-term overloads,
Remarkable temperatures inside the unit,
….
- Number of turn-on sequences and overvoltage transients