Planning the electrical installation
40
Safe Torque Off
The drive supports the Safe Torque Off function according to standards
prEN 61800-5-2; EN 954-1 (1997); IEC/EN 60204-1: 1997; EN 61508: 2002 and
EN 1037: 1996.
The Safe Torque Off function disables the control voltage of the power
semiconductors of the drive output stage, thus preventing the inverter from
generating the voltage required to rotate the motor (see diagram below). By using
this function, short-time operations (like cleaning) and/or maintenance work on non-
electrical parts of the machinery can be performed without switching off the power
supply to the drive.
WARNING!
The Safe Torque Off function does not disconnect the voltage of the
main and auxiliary circuits from the drive. Therefore maintenance work on electrical
parts of the drive or the motor can only be carried out after isolating the drive system
from the main supply.
Note:
It is not recommended to stop the drive by using the Safe Torque Off function.
If a running drive is stopped by using the Safe Torque Off function, the drive will stop
by coasting. If this is not acceptable (e.g. causes danger), the drive and machinery
must be stopped using the appropriate stopping mode before using this function.
For further information on the function, refer to
Safe Torque Off Function, Application
Guide
(3AFE68929814 [English]).
+24 V
X6:1
X6:2
X6:3
X6:4
U2/V2/W2
Control
circuit
UDC+
UDC-
ACSM1-04
Output stage
(1 phase shown)
Safe Torque Off
connection on JCU
Activation
switch
Notes:
• The contacts of the activation switch must
open/close within 200 ms of each other.
• The maximum cable length between the drive
and the activation switch is 25 m (82 ft)
Summary of Contents for ACSM1 Series
Page 1: ...ACSM1 Hardware Manual ACSM1 04 Drive Modules 0 75 to 45 kW...
Page 2: ......
Page 4: ......
Page 14: ...Table of contents 14...
Page 20: ...About this manual 20...
Page 24: ...The ACSM1 04 24...
Page 30: ...Planning the cabinet assembly 30...
Page 46: ...Planning the electrical installation 46...
Page 70: ...Maintenance 70...
Page 84: ...Technical data 84...
Page 90: ...Mains filters 90...
Page 96: ...Dimension drawings 96 Frame size A...
Page 97: ...Dimension drawings 97...
Page 98: ...Dimension drawings 98 Frame size B...
Page 99: ...Dimension drawings 99...
Page 100: ...Dimension drawings 100 Frame size C air cooled module...
Page 101: ...Dimension drawings 101...
Page 102: ...Dimension drawings 102 Frame size C for cold plate mounting...
Page 103: ...Dimension drawings 103 Frame size D air cooled module...
Page 104: ...Dimension drawings 104 Frame size D for cold plate mounting...
Page 106: ...Dimension drawings 106 Mains filters type JFI xx...
Page 108: ...Dimension drawings 108 Braking resistors type JBR xx...
Page 110: ...Dimension drawings 110...
Page 111: ......