ABB ACS850 Series Application Manual

Also see for ACS850 series: Quick start up guide Quick start guide User guide Quick start up guide Hardware manual

Contents

ABB ACS850 Series Application Manual Manual pdf 15 page image

Implementing a Safe disconnection function 15 Parameter settingsACS850 standard control programNote: A manual reset is mandatory in an ATEX compliant safety functions. After the relayhas detected a motor overtemperature, the drive must not restart before a manual resetcommand. This can be implemented either by a manual reset of the ATEX compliant relaywith the motor overtemperature indication of ACS850 standard control program (indicationto be set as Fault), or by setting the drive parameter 30.07 into Fault in ACS850 standardcontrol program.Select the STO indication for the drive with parameter 30.07 Sto diagnostic. In thisexample, Fault is required if the reset is implemented with the parameter 30.07 Stodiagnostic. The control panel display shows fault message 0031 SAFE TORQUE OFFwhen one or both STO inputs are switched off (0) or lost. If the drive control unit isexternally powered, but no main power is connected to the drive, the fault message shows0021 STO1 LOST (for XSTO connection 1 - 3) and 0022 STO2 LOST (for XSTOconnection 2 - 4). With the setting Fault the indication is the same, independent onwhether the drive is running or stopped when the STO input is switched off. The drive canbe restarted after resetting the fault.If you implement the manual reset in the relay, the parameter 30.07 can be set to anyvalue.Configuring a motor overtemperature indication messageNote: The control program of the drive has two separate temperature monitoringfunctions. In this example, one of these functions is configured to monitor digital input DI6.To configure a motor overtemperature indication message on the drive control paneldisplay, do the following steps:1. Connect XD24:1 (+24 V DC) through one normally-open contact of the thermistorrelay to digital input DI6 on the drive control unit.2. Set parameter 31.02 Mot temp1 src to (4) PTC JCU.3. Set parameter 31.01 Mot temp1 prot either to (1) Alarm or (2) Fault depending on thepreferred indication.Ensure that the thermistor relay, parameter 31.01 or parameter 30.07 lead to a fault whichrequires a manual reset action. Switching frequency limitationThe certificate of the Ex motor typically requires that you set a minimum limit for theswitching frequency of the drive.For ABB Ex motors with ACS850 drives, set the minimum switching frequency to 3 kHz forboth DTC motor control mode and scalar motor control mode. For more instructions,contact your ABB representative. Wiring instructionsSee sections Connection diagram on page 14 and General wiring instructions on page 18.