Explanation Of Each Part Of Power Backup System; How To Set Rotary Switch And Dip Switches; Transition Of Led Display After Power Is Turned On - Mitsubishi Electric MDS-E Series Instruction Manual

MDS-E/EH Series Instruction Manual
9 Power Backup System

9.3 Explanation of Each Part of Power Backup System

9.3.1 How to Set Rotary Switch and Dip Switches

The rotary switch (SW1) of the power backup unit is for selecting the regenerative resistor for the power backup unit to
be used. The dip switches (SW2, SW3) are for function selection of the power backup unit. The settings of these
switches are enabled when the power backup unit power is turned ON.
Power backup unit
(MDS-D/DH-PFU)

9.3.2 Transition of LED Display After Power Is Turned ON

When the power backup unit power has been turned ON, the unit will automatically execute self-diagnosis and initial
settings for operation, etc. The LEDs on the front of the units will change as shown below according to the progression of
these processes.
If an alarm occurs, the alarm No. will appear on the LEDs. Refer to section "9.4.1 LED display when alarm or warning
occurs" for details on the alarm displays.
(1)
Function selection
機能選択スイッチ
SW1 SW2 SW3
SW2 SW2
1 2 3 4 5 6
SW3 SW3
*1: The switches are OFF when facing bottom as illustrated.
(2)
ロータリスイッチ Rotary switch
*2: If you select this, the function selection error (Alarm 18) will occur in the power backup unit.
Power backup unit
LED display
Power backup unit function selection
設定内容
switch Description
(SW2／SW3)
(SW2／SW3)
Capacitor unit connection
1
1
2
2
3
Not used
3
4
4
Power failure detection time for
5
AC input voltage
5
(including open-phase detection
signal)
Power failure detection
6
sensitivity for AC input
6
voltage
Regenerative resistor selection for power backup unit
MDS-D-PFU MDS-D-PFU
Name of Resistance Continuous
(SW1) (SW1)
regenerative value
resistor [Ω]
0 0
Setting prohibited
1 1
2 2 R-UNIT-7 - - 1.4
3 to 13 3〜13
Setting prohibited (*2)
14 14
15 15
In initializing
Initializing completed
In ready ON
(In Charging)
Ready ON state
(Charge completed)
455
設定
Setting
OFF
Not connect
Connect
ON
Setting prohibited (All OFF) (*1)
OFF
Standard setting (60ms)
ON
High-speed setting (20ms)
Standard setting
OFF
(120VAC: MDS-D-PFU)
(240VAC: MDS-DH-PFU)
High-sensitivity setting
ON (135VAC: MDS-D-PFU)
(270VAC: MDS-DH-PFU)
MDS-DH-PFU MDS-DH-PFU
Name of Resistance Continuous
rating regenerative value rating
[W] resistor [Ω]
[W]
Setting prohibited
R-UNIT6 - 5.0 2100
2100
Setting prohibited
Setting prohibited
IB-1501229-F