Siemens SENTRON PAC3100, Руководство пользователя, Страница: 59 / 152

Commissioning
7.3 Parameterizing the device
SENTRON PAC3100
Manual, 07/2009, A5E02385159B-01
59
The value of the voltage input is permanently saved and becomes effective immediately.
The display returns to display mode.
7. Return to one of the selection menus or to the measured values display:
<F1>
7.3.3 Current input
7.3.3.1 Setting the conversion ratio of the current transformer
The conversion ratio must be set before initial startup.
Figure 7-9 "CURRENT INPUTS" device setting
Procedure
1. In the "SETTINGS" menu, call the "BASIC PARAMETERS" entry.
2. In the "BASIC PARAMETERS" menu, open the "CURRENT INPUTS" entry:
<F4>
The display shows the currently valid settings.
3. Open edit mode of the "CT PRIMARY" device setting:
<F4>
4. Set the desired value of the primary current:
<F2> and <F3>
5. Accept the value with:
<F4>
The value of the primary current is permanently saved and becomes effective
immediately.
The display returns to display mode.
6. The value "CT SECONDARY" is fixed at 5 A and is skipped with the key F3 .
7. Specify the direction of current flow for the individual phases a, b and c:
Key <F2> or key <F3>
With inverse connection, the measured values are inverted and receive a negative sign.
Reconnection of the terminals is not necessary. Invert only the direction of current flow of
the relevant phase.
On/off switch: ON/ OFF
The setting is saved permanently and is immediately effective.
8. Return to one of the selection menus or to the measured values display:
<F1>