ABB PFVL142C Horizontal measuring sensor

The SGDG-04GT has terminals for connecting an external regen resistor of higher capacity. However, the SGDG-04GT does not automatically recognize this external regen resistor and it doesn’t activate the regen IGBT. Thus, when an external resistor is connected, the regen energy is still processed by internal regen capacity. The alarm #4 (overvoltage) will occur if the regen energy is too high. To add external regen capability to the SGDG-04GT, one of the following methods may be used: 1. Use external regen unit JUSP-RG08D. Refer to the information in the table above for more details. When this external regen unit is used, #5 of SW1 in the SGDG-04GT should be turned OFF to avoid erroneous alarms.

Use SGDG-04GTY22P for external regen application only. 

If the user knows that the application requires extra regen capacity, the Y-mod unit must be ordered. With Y22P-mod, two (2) external regen resistors, RH500N25_ohmK, wired in series must be connected to the SGDH-04GT at all times. These resistors should be connected across terminals B1 and B2. The convection cool capacity of these two resistors in series is 120W. The capacity increases to 300W with forced-air cooling. Therefore, the items required are: 1 x SGDG-04GTY22P 2 x RH500N25_ohmK

Connecting the JUSP-RG08D to the SGDG-01GT/SGDG-04GT

a) A regenerative unit has the following fault detection functions: • Detecting disconnection in a regenerative resistor • Detecting faults in a regenerative resistor • Detecting overvoltage 

b) When one of these fault detection functions operates, the internal alarm relay is actuated. Then the circuit between output terminals C1 and C2 is opened. 

c) When an external resistor is used, remove the shorting jumper between Y4 and Y5. Then, connect the resistor between P/Y3 and Y4. 

d) The resistance value of the external resistor should be 50Ω min.

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