ABB Remote I/O RIO600 Installation And Commissioning Manual page 109

1MRS757488 H
RIO600
Installation and Commissioning Manual
Io
GUID-E64EB1AC-DA5B-4340-8250-1958E5A8BB8C V1 EN
Figure 57: Functional module diagram
Level detector
The fundamental component of residual currents is compared with the Start value
setting. If the measured value exceeds the Start value setting, the Level detector sends
an enable signal to the timer module. The direct measured residual current or
calculated residual current can be used for fault detection. The selection can be set
with Io signal Sel available in the general parameter setting.
The Absolute hysteresis setting can be used for preventing unnecessary oscillations in
STR GENERAL and OP GENERAL output if the input current is slightly above or
below the Start value setting. After leaving the hysteresis area, the start condition has
to be fulfilled again and if it is not sufficient, the signal returns to the hysteresis area.
Timer
Once the Timer is activated, it activates the STR GENERAL output. The time
characteristic is according to the definite time. When the operation timer has reached
the value set by Operate delay time, the OP GENERAL output is activated. If the fault
disappears before the module operates, the reset is instantaneous and STR GENERAL
output is deactivated.
The OP GENERAL output is available at LED 7 of SIM8F module.
The STR GENERAL and OP GENERAL output signals are available over
communication.
Signals
Table 69: EFPTOC Output signals
Name
Op general
Str general
Timer
Level
t
detector
Type
Boolean
Boolean
Section 6
Commissioning
Op general
Str general
Description
Operate signal
Start signal
101