text: <s>[INST] POWERFLEX 700S FAN Summary: SHOULDN'T FAN STOP WHEN VSD IS ON IDLE?Hello experts, I have got 13 (thirteen) 355kW VSDs and when they are in idle mode the cooling fans remaining running all the time. I have before worked with SIEMENS MASTERDRIVES and MICROMASTERS SIEMENS MASTERDRIVES the fan will only start when the VSD receives a start signal and stop when the VSD receives a stop from any source. SIEMENS MICROMASTER the fan will start when the VSD receives a start signal,the fan stop is user defined via parameter. Does the POWERFLEX 700S frame 10 have that option? Any parameter or hard wiring ? Please see the attached name plate. [/INST] Take a look at the technote below https://rockwellautomation.custhelp.com/app/answers/detail/a_id/28186/page/2 tech note:28186 Question When do the heatsink cooling fans turn on or run in PowerFlex 700/700H and 700S AC drives? Environment 20B PowerFlex 700 / Reliance SP600 20C PowerFlex 700H 20D PowerFlex 700S Answer The heatsink cooling fans turn on or run in PowerFlex 700/700H and 700S AC drives as described in the list of frame sizes and cooling fan operations for each below: PowerFlex 700 / SP600 Frames 0-4 On newer firmware (approximately mid '07) the heatsink cooling fan will be running only when the drive is modulating PWM (running). So when the drive is powered up and in a stopped state the heatsink cooling fans are off. In firmware before mid '07, the heatsink cooling fan will be running when the drive is powered up. So when the drive is powered up and in a stopped state the heatsink cooling fans are running. PowerFlex 700 / SP600 Frame 5-6, 8 The heatsink cooling fans are powered from the line or utility power. This makes the heatsink cooling fan on as long as power is applied to the drive. This is why you must use input terminals R and S in single-phase applications for these frame drives. For DC input drives you must supply 120VAC or 240VAC to power the fans. The frame 5 requires 100VA. Frame 6 requires 138VA. PowerFlex 700S Frames 9-14 The cooling fans come on after precharge and remain on until power is removed. They are AC motors powered by small inverters that are powered by the DC Bus. The ASIC board sends a signal to the inverters to start after precharge. PowerFlex 700H Firmware Revision 4.001 or Less All fans will run once the drive exits precharge PowerFlex 700H firmware version 5.001 or greater The heatsink fan will run when the drive is modulating (running). The fan will turn off when the drive is stopped and the heatsink temperature is below 55C for 60 sec's. Fan Control Option Added The ability to turn off the main cooling fans under certain conditions has been added. For 480V AC / 650V DC drives, when the drive is stopped and the heatsink temperature has dropped below the limit of 55° C for 60 seconds the cooling fans will turn off. Also, for 690V AC / 932V DC drives, when the DC bus voltage drops below 1000V, the cooling fans will turn off after a four minute delay. If this functionality is not enabled, the fans run whenever the drive is energized. The following parameter has been added to support this new feature. Parameter 465 [Fan Control] The ASIC card fan will run when the drive exits precharge. \\n </s>