Control Techniques FXM5, User Manual

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14
FXM5 User Guide
www.controltechniques.com Issue Number: 5
3.9.5 Internal control of the field current (fixed level)
Figure 3-10 Power and signal connections for internal control of the field current
Make signal connections to terminal block TB1, as follows:
3.9.6 Field economy
When the FXM5 controller is in normal use, connect TB1 terminal 1 to terminal 2. This
can be achieved using external contacts. When field economy is required, the contacts
should be opened. The field current is reduced to the minimum value set using RV2.
When the FXM5 is being controlled from the Mentor using Menu 6 the field current can
be reduced by controlling parameter 6.14. The field can be automatically reduced if the
armature is disabled. This function is controlled by parameter 6.12, 6.15.
TB1 Function
1
Field economy contact
Connect to terminal 2 for normal operation. Open
circuit for field economy.
2 0V common
3 Field-current amplifier input Do not connect
4 -15V, 10mA max. output Use to supply external devices
5 +15V, 10mA max. output Use to supply external devices
6
Field-current output signal
0-10V represents 0 to I
F
max
7 Armature-voltage output signal Not used
8
Field-current failure relay
Common contact
9 Contact closed when field current is normal
10 Contact open when field current is normal