Mean Well PHP-3500, Руководство пользователя

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3.6 Short Circuit Protection & Over Current Protection
3.7 Over Voltage Protection (OVP)
3.8 Over Temperature Protection (OTP) and Alarm
◎
The protection activates when the output is short-circuited or the output current exceeds 110%±5 of the rated output current.
◎ .
Built-in over voltage protection circuit
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Built-in thermal detection circuit, once the internal temperature exceeds a threshold value, the unit will shut down automatically.
◎
When the internal temperature is within a normal value, there will be a LOW signal (-0.5-0.5V) sent out through T-ALARM on " "
◎
Maximum output current: 10mA
◎
When internal temperature reaches 85 , trigger point of a thermal alarm, the red LED on the output will flash and there will be an
℃
alarm signal sent out through the PMBus/CANBus (by request) interface, please refer to 3.13.2. Even so, the unit is still operating
normally.
◎ .
OVP triggering points vary in different output models. Please refer to the specification sheet for detailed information
◎
Once OVP is triggered, leave the unit off for 20 seconds before recycling AC again.
Re-power on to recover when short-circuit/overload condition is removed.
Please switch off the AC input, remove all possible causes and then leave the unit cooling down to a normal working temperature
(approximate 10 minutes - 1 hour) before repower on again.
CN47; There will be a HIGH signal (3.5-5.5V) sent out through T-ALARM on CN47 when internal temperature exceeds a " "
certain value. (referenced to GND-AUX).
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3.10 Remote Control
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Built-in remote ON/OFF control circuit, refer to Figure 3-3 for the control method.
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Please be aware that ON/OFF and +12V-AUX on CN47 should be linked together to allow the unit operate normally; If they " " " "
are kept open, there will be no output voltage.
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Maximum input voltage: 13.2V
Figure 3-3 Connection of Remote Control
Between CN1 ON/OFF and +12V-AUX
SW Open
SW Short
Output
OFF
ON
◎
When DC output voltage is out of normal range, there is a HIGH signal (3.5-5.5V) sent out through DC-OK on CN47. " "
◎
Maximum output current: 10mA
◎
When DC output voltage is within a normal value, there is a LOW signal (-0.5-0.5V)sent out through DC-OK on CN47. " "
(referenced to GND-AUX)
.
(referenced to GND-AUX)
.
◎ .
Built-in DC output voltage detection circuit
3.9 DC OK Signal
+12V-AUX
CN47
ON/OFF
PHP-3500
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1
3.11 Parallel Operation
◎ .
Parallel operation is only suitable for the identical units (with the same model and the same output voltage/current)
◎ .
The power supplies should be paralleled using short and large diameter wiring and then connected to the load
◎
The total output current must not exceed the value determined by the following equation: Maximum output current at parallel
operation = (Rated current per unit)x(Number of unit)x0.9.
the current shared among units may not be balanced.
normal ripple level once the output load is more than 5%.
◎
When the total output current is less than 5% of the total rated current, or say (5% of Rated current per unit)x(Number of unit)
◎
Under parallel operation ripple of the output voltage may be higher than the SPEC at light load condition, It will go back to
◎ .
CN55/SW51 Function pin connection
(V : CN55 connected ; X : CN55 not connected.)
Parallel
CN55 CN55 CN55 CN55 SW51 SW51 SW51 SW51
PSU1 PSU2 PSU3 PSU4
1 unit
X
OFF
OFF OFF
ON
ON
ON
ON
∣ ∣
∣
∣
∣
∣
∣
∣
∣
∣
∣
∣
ON V
V V
V
ON
V ON
V
V
V V
2 unit
3 unit
4 unit