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AUTOM ATIC CONTROL U N ITS , OM D20 0 A N D 3 0 0
AU TO M AT I C CO N T R O L U N I T S , O M D 2 0 0 -3 0 0
—
7.2
Configuration
20
5
10
15
+- %
0s5
10
30
0s
5
10
30
Ts
Tbs=300s
Tbs=Ts
Lim
SETUP
TEST
25
30
K
A00292
Main Voltage / V
Voltage threshold
208, 220
230
380, 400, 415, 440
480
+-20 %
+-25 %
+-30 %
+-20 %
Figure 7.4
Selection of delay time and voltage threshold, the factory settings are shown in the
figure, the available voltage threshold settings / voltage in the table
7.2.1
Rotary switches
TTs / Tbs = Delay times for automatic switching
The delay time is the time before activating the switching sequence and the back switching sequence.
User can choose two types of settings for delay times:
Choice 1: Darker side of the rotary switch
Available selections for the delay times are: 0, 5, 10 and 30 s. When this side is used the back switching
delay Tbs is always same as switching delay Ts.
Choice 2: Lighter side of the rotary switch
Available selections for the delay times are: 0, 5, 10 and 30 s. When this side is used the back switching
delay Tbs is always set to 300s.
Lim = Voltage threshold with SETUP and TEST function
The available selections for voltage threshold in OMD200 and OMD300 are: ± 5, ± 10, ± 15, ± 20, ± 25, ±
30 %, see the available settings / voltage in Figure 7.4. By setting the voltage threshold, the unbalance
is also set to the same level.
When the user wants to enter to the SETUP mode, the automatic control unit has to be set to manual
mode and Lim rotary switch has to be set to SETUP position. In SETUP mode it is possible to choose
between three operating modes: standard switching mode, no priority mode or manual back switching
mode. In the SETUP –mode user must also choose between automatic OTM_C_D, motorized
OTM40…125_CMA_ or motorized OTM_160…2500_CM_ change-over switch. See Section 6.4.2 Choice
of Operating mode in OMD200 and OMD300.
When the Lim rotary switch is set to the TEST position, the automatic control unit OMD200 or OMD300
enters the test sequence. In test sequence it is possible to simulate switching and back switching
sequences step by step by pushing the AUTO key.
Содержание OMD200
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