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11
3.6
Fan Speed Control
◎
Built-in fan speed control circuit, the fan speed changes
3.7
Short Circuit Protection & Over Current Protection (only for RCP-1600)
◎
The protection activates when the output is short-circuited or the output current exceeds 110%±5% of the rated output current. Re-power on to recover
when the short-circuit/overload condition is removed.
3.8
Over Voltage Protection (OVP)
◎ Built-in over voltage protection circuit for every single units.
◎
OVP triggering points vary in different output models. Please refer to the specification sheet for detailed information.
◎ Once OVP is triggered, leave the units off for 10 seconds before recycling AC again.
3.9
Over Temperature Protection (OTP) and Alarm
◎ Built-in 2 sets of thermal detection circuit, once the internal temperature exceeds a threshold value, the unit will shut down automatically (the fans will
still be operating to cool down the unit). Please switch off the AC input, remove all possible causes and then leave the units cooling down to normal
working temperature (approximate 10 minutes – 1 hour) before repower on again.
◎
When the internal temperature reaches 60 , trigger point of a thermal alarm, the red LED on the front panel will flash and there will be an alarm signal
sent out through the PMBus interface (refer to 3.19). Even so, the units still operate normally.
◎ When the internal temperature is within a normal value, there will be a "LOW" signal (-0.1 -0.5V) sent out through T-ALARM on CN1; there will be a "HIGH"
signal (4.5 -5.5V) sent out through T-ALARM on CN1 when internal temperature exceeds a certain value. (referenced to GND-AUX).
◎ Maximum output current: 10mA.
3.10
AC OK signal
◎
Built-in AC input voltage detection circuit.
◎
When AC input voltage
CN1. (
referenced to
◎
When AC input voltage
signal (- . - .5V) sent out
0 1 0
◎
Maximum output current10mA.
3.11
DC OK signal
◎
Built-in DC output voltage detection circuit
◎ When DC output voltage is within a normal value, there is a "LOW"(-0. -0.5V) signal sent out
◎
When DC output voltage is out of normal range, there is a "HIGH"(4.5-5.5V) signal sent out
◎ Maximum output current 10mA.
3.12
Fan-lock Protection & Alarm Signals
◎
Built-in fan-lock protection circuit, the output will shut off when the DC fans stop operating (fan-lock or broken wires). In the meantime, there will
be a "HIGH" signal sent out through T-ALARM, referenced to GND AUX. Please remove the unit from your system and send back to our local
distributor or MEAN WELL for repair.
◎
Maximum output current 10mA.
3.13 Remote Control
◎
Built-in remote
◎ Please be aware that "ON/OFF"and "+ V-AUX" n CN1 should be linked together to allow the units operate normally; If
output voltage.
◎ Maximum input voltage 5.5V.
CN1
RHP-1U System
Whole rack system
3.14
Remote Sense (only for RCP-1600)
◎
Built-in remote sense circuit that is able to compensate voltage drop up to 0.5V
◎
When using this function, the sensing wires should either be twisted or shielded to prevent external noise interference (refer to Figure 3-4).
◎
Voltage drop across the output wires must be limited to less than 0.5V. Also wires with adequate current rating should be used between
loads. Please firmly connect the output wires to prevent them from loosing, or the power supply may be out of order.
◎
The +S and –S have to be connected to the +V(signal) and –V(signal), respectively, as shown in Figure 3-5, which is Local Sense, in order to get the
correct output voltage if Remote Sense is not used. Otherwise, the output voltage will increase to a extremely high level which may trigger OVP.
automatically d
℃
≧87V
rms, the output voltage can start working normally and there will be a "
GND-AUX).
≦75V
rms, The output voltage shuts off and the red LED on the fron panel will light up. In the mean time, there will be a "
through
AC-O
K on CN1 referenced to GND AUX
. (
.
ON/OFF
control circuit, refer to Figure3-3 for control methods of single unit or whole rack system.
5
o
3
ON/OFF A
7
ON/OFF B
11
ON/OFF C
15
RHP-1U System
ON/OFF D
19
ON/OFF E
21
+5V-AUX
ON/OFF
Figure 3-3 Connection of Remote Control
epending on the internal temperature.
HIGH
-
).
1
through
DC-OK
through
DC OK on CN1 referenced to GND AUX
-
3
CN1 ON/OFF A
7
ON/OFF B
11
ON/OFF C
15
ON/OFF D
19
ON/OFF E
21
+5V-AUX
Single unit ON/OFF
.
RCB-1600-RHP-1U_1610-21407-0001-E-0420
s
a
" signal( . - .5V) sent out
4 5 5
through
AC-OK n
LOW
on CN1 referenced to GND AUX
. (
-
-
. (
-
).
kept open
, there will be no
Between CN1 ON/OFF
Output
and +5V-AUX
SW Open
OFF
SW Short
ON
+V,-V and the
o
"
).
9
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