EWR1601-0 POWER ONE, EWR1601-0 Datasheet - Page 22

• Manufacturer Part Number: EWR1601-0
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of EWR1601-0

• Output Current: 5A
• Input Voltage: 110V
• Number Of Outputs: 1
• Mounting Style: Din-Rail
• Lead Free Status / Rohs Status: Not Compliant

Adjustment of Threshold Levels (D1/D5)
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 Rx / Ry. Resistor Rx to pin 3 (VCC) lowers
the levels, whereas Ry to pin 1 (GND1) increases them (see
fig. 22).
BCD20020-G Rev AB1, 17-Nov-09
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 a warning signal or
to switch off a part of the load. When the output voltage V
V
output is conducting: V
When V
(open-collector, max. 58.6 V). In double-output models, D1
monitors only output 2 (V
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
of 24.7 V: trigger level at 21 V).
D5: System Voltage Monitor (Battery Deep)
D5 monitors the output voltage V
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
than V
conducting:
When V
(open-collector, max. 58.6 V). In double-output models, D5
monitors only output 2 (V
In systems without battery support, D5 signals that V
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.
Table 17: Options D1 and D5: Trigger and switch-on levels
Model
LWR/LWN1140
LWR/LWN1240
LWR/LWN1840
LWR/LWN1740
o2
) is greater than V
V
D5
o low D5
o
o
< 1.5 V, I
is lower, the D1 signal output is high impedance
is lower, the D5 signal output is high impedance
specified in table 17, the D2 signal output is
Battery
o nom
V
[ V]
D5 max
12
24
36
48
Bat
o low D1
should be chosen (e.g., for a bus voltage
D1
®
< 50 mA.
o2
o2
trigger switch on trigger switch on
< 1.5 V, I
34.4
11.5
[ V]
).
).
23
46
specified in table 17, the D1 signal
V
o low D1
D1 max
12.1
24.2
36.3
48.4
[ V]
o
(V
< 50 mA.
o2
o
(or V
in double-output
10.5
31.5
[ V]
21
42
125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
V
o low D 5
o2
) is greater
o
(or V
12.1
24.2
36.3
48.4
[ V]
o
Page 22 of 25
o2
(or
)
Fig. 22
Wiring to adjust both threshold levels of option D1 or D5
SD: Shutdown
Reduces the output power to approx. 1 W, but the converter is
not fully disabled. In a no-load condition, V
see fig. 23. In double-output models, only output 2 is
influenced.
Fig. 23
Output voltage versus output current, while the shutdown is
activated (V
Table 18: Shutdown conditions
Sys-OK: Status
This function allows in a battery charger application for
checking, whether the output is correctly following the external
control signal at the R-input (coming for instance from the
temperature sensor). The logic is shown in table 19.
Voltage V
shutdown pin
2.0 V or open
< 0.7 V
V
1
5
3
SD
0
i
on
= V
0.2
i nom
9
).
VCC
Change threshold
5
Result
Converter disabled (P
Converter enabled
0.4
x
D-SUB
8
4
3
7
0.6
2
6
W Series Data Sheet
1
GND1
y
0.8
o
o
1
approx. 1 W)
www.power-one.com
drops below 6.2 V;
1.2
05175b
A