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X Series Data Sheet
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Table 17: Option board M2
375, 500 Watt AC-DC and DC-DC DIN-Rail Converters
When V o is lower, the D1 signal output is high impedance
Function
R
D2
D5
D-adjust
Description
Output voltage adjust 1
Input voltage monitor V i low
Output voltage monitor 1
(battery deep discharged): V o low D5
Adjustment of trigger values D1 and D5
(open-collector, max. 58.6 V). In double-output models, D1
monitors only output 2 ( V o2 ).
In applications without battery-buffering the D1 signal may not
be suitable, since smaller dynamic load changes may cause
D1 to trigger. For such applications, D5 with a trigger level of
approx. 85% of V o nom should be chosen (e.g., for a bus voltage
of 24.7 V: trigger level at 21 V).
1
In double-output models, only output 2 is concerned.
D5: System Volt. Monitor (Battery Deep Discharge)
Multiple Options M1 or M2
The option board is suitable for applications, where several
options are needed. Option M1 is standard for battery charger
models, option M2 is suitable for applications without battery
or for simple applications with battery.
In general, the multiple options M1 or M2 are connected to an
additional D-SUB connector. Some signals (but not option R)
can also be connected to AUX1 and AUX2, if the D-SUB
connector is not suitable to the customer.
D2: Input Voltage Monitor (Power Fail)
D2 monitors the input voltage V i . When V i drops below 65±3
VAC or 92 VDC, the D2 signal output is high impedance
(open-collector, max. 50 V).
When V i is greater then said level, the signal output D2 is
conducting: V D2 < 1.5 V, I D2 max < 50 mA.
D1: Output Voltage Monitor
D1 is intended for monitoring the bus voltage of a battery-
buffered system. It indicates that the system is powered from
the battery and can for instance be used as warning signal or
to switch off a part of the load. When the output voltage V o (or
V o2 ) is greater than V o low D1 specified in table 17, the D1 signal
output is conducting: V D1 < 1.5 V, I D1 max < 50 mA.
D5 monitors the output voltage V o ( V o2 in double-output
models) or the lowest admissible voltage of a connected
battery (battery deep discharge). The definition of D5 is similar
to D1, but the trigger level is lower. When V o (or V o2 ) is greater
than V o low D5 specified in table 17, the D2 signal output is
conducting:
V D5 < 1.5 V, I D5 max < 50 mA.
When V o is lower, the D5 signal output is high impedance
(open-collector, max. 58.6 V). In double-output models, D5
monitors only output 2 ( V o2 ).
In systems without battery support, D5 signals that V o (or V o2 )
is going to drop below a safe value.
In battery-buffered systems, D5 indicates that the battery has
reached its deepest discharge level prior to getting damaged.
The D5 signal can be used for instance to disable loads, save
data, or to start a controlled switch-off of running processes.
Adjustment of Threshold Levels (D 1 or D 5)
Pin 7 of the D-SUB connector allows for adjustment of the
threshold levels of D1 and D5. Both levels are influenced by the
voltage divider R x / R y. Resistor R x to pin 3 (VCC) lowers the
levels, whereas R y to pin 1 (GND1) increases them; see fig. 19.
D-SUB
5 4 3 2 1
12
AUX2 11
AUX1 10
9
8
Vo2+ 7
or Vo+ 6
5
4
3
2
1
+
Vo2+
or Vo+
12
11
10
9
8
7
6
5
4
3
2
1
D-SUB
5 4 3 2 1
9 8 7 6
+
D-SUB
5 4 3 2 1
9 8 7 6
9 8 7 6
VCC GND1
R x R y
Change threshold
Fig. 19
Wiring to adjust both threshold levels of option D1 or D5
Table 18: Options D1 and D5: Trigger and switch-on levels
Model Battery V o low D1 V o low D 5
V Bat trigger switch on trigger switch on
[V] [ V ] [ V] [ V] [ V]
LXR/LXN1140 12 11.5 12.1 10.5 12.1
Fig. 18
Option D2: Examples of relay
control to monitor a power failure
+
LXR/LXN1240
LXR/LXN1840
LXR/LXN1740
24
36
48
23
34.4
46
24.2
36.3
48.4
21
31.5
42
24.2
36.3
48.4
BCD20021-G Rev AC1, 13-May-2013
Page 18 of 21
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