ABB REM 610 Technical Reference Manual

Also see for REM 610: Operator's manual Product guide Installation manual Product guide Technical reference manual

Contents

ABB REM 610 Technical Reference Manual Manual pdf 20 page image

The functions of the digital inputs are determined with the SGB switches. Fordetails, refer to Section 5.2.1. Input/output connections and Table 5.1.4.12.-8,Table 5.2.1.-1 and Table 5.2.1.-5.5.1.1.3. OutputsThe relay is provided with:* Three trip output contacts (PO1, PO2 and PO3)* Two non-trip contacts (SO1 and SO2)Switchgroups SGR1...5 are used for routing internal signals from the protectionelements, the motor start-up signal and the external trip signal to the desired non-tripor trip output contact. The minimum pulse length can be configured to be 40 or 80ms and the trip output contacts can all be configured to be latched.5.1.1.4. Emergency startThe emergency start function allows motor start ups although the restart disable hasbeen activated. The function is activated in SGB1...5. The emergency start will beactivated when the selected digital input is energized and will remain active for tenminutes. On the rising edge of the emergency start signal* the calculated thermal level will be set slightly below the restart disable level toallow at least one motor start up* the value of the register of the cumulative start-up time counter will be setslightly below the set restart disable value to allow at least one motor start up* the set trip values of temperature elements 49/38-1 and 49/38-2 will be increasedby 10 per cent* the external restart disable signal will be ignored.The set trip values of elements 49/38-1 and 49/38-2 will be increased by ten per centand the external restart disable signal ignored for as long as the emergency start isactivated. A new emergency start cannot be made until the emergency start signalhas been reset and the emergency start time of ten minutes has expired. Activationof the emergency start signal will generate an event code, which cannot be maskedout from the event reporting.5.1.1.5. Restart disableThe restart disable signal is used to disable motor start ups when the motor isoverheated, for instance. The restart disable signal is routed to PO3 by default, butcan be deselected in SGF1. The signal will be activated when any of the followingconditions exists:* the trip signal from any protection element is active* the restart disable signal from the thermal protection element is active* the restart disable signal from element 66 is active* the external restart disable signal is active20REM 610REM 610 Motor Protection RelayTechnical Reference Manual - ANSI Version1MRS755537