Installation

The FGD-2 is typically preinstalled in an excitation control system.

If replacement is necessary, carefully label and document each of the

connections to the FGD-2 in order to properly reconnect the new module.

FGD-2 connectors and indicators are illustrated in Figure 1. Locator

letters in Figure 1 correspond to the lettered descriptions in Table 1.

When a replacement FGD-2 is installed in a DECS-2100 or ECS2100

system, the system calibration values may need to be updated.

Retrofitting an FGD

Although the FGD-2 is smaller in size than the FGD, it may still be mounted

in place of an FGD using only four of the six existing mounting holes.

Either the upper four or the lower four mounting holes may be used.

BE1-FLEX

The FGD-2 output can be connected to any analog input of the BE1-FLEX.

Field ground protection settings can be configured in BESTCOMSPlus.

Ground Detection Source

The ground detection source supplies approximately –60 Vdc to the positive

side of a machine field and measures the level of leakage current to ground.

The positive side of the field bus is held negative with respect to ground.