Pin
SIGNAl
Pin
SIGNAl
1
Frame Gnd
6
Sto-1(+)
2
Sto-1(+)
7
Sto-1(-)
3
Sto-1(-)
8
Sto-24V
4
Sto-2(+)
9
STO-GND
5
Sto-2(-)
1
6
9
5
SAFETY
1
6
9
5
Frame Ground
STO-24V
*
XM2 and XEL-XPL STO bypass connections are different.
The diode shown should be used if XM2 and XEL-XPL drives are used on the same
equipment. Otherwise, the diode may be replaced by a jumper.
XM2 STO bypass connectors are not compatible with XEL-XPL drives.
STO-GND
J6
Xenus Plus Dual-Axis
Bypass Plug Connections
Jumper pins:
2-4, 3-5, 6-8, 7-9 *
STO-1(+)
STO-2(+)
STO-2(-)
STO-1(-)
STO-1(+)
STO-1(-)
2
3
1
4
5
6
7
8
9
Upper IGBT Gate Drive
PWM Signals
Buffer
Voltage
Regulator
EN
+HV
PWM
Outputs
+VI
+VI
V_in
+VI
Lower IGBT Gate Drive
*
RoHS
Xenus
PLUS
2-Axis
MACRO
XM2
Rev 01
Copley Controls, 20 Dan Road, Canton, MA 02021, USA
16-01419
Rev A
Page 7 of 34
safe torque off (sto)
DeSCRiPtion
The XM2 provides the Safe Torque Off (STO) function as defined in IEC 61800-5-2. Three opto-couplers are provided which, when de-energized, prevent
the upper and lower devices in the PWM outputs from being operated by the digital control core. This provides a positive OFF capability that cannot be
overridden by the control firmware, or associated hardware components. When the opto-couplers are activated (current is flowing in the input diodes),
the control core will be able to control the on/off state of the PWM outputs.
STO MUTING (ByPASS) CONNECTIONS
SAFETy CONNECTOR J6
inStAllAtion
J6 SIGNAlS
STO ByPASS (MUTING)
In order for the PWM outputs of the XM2 to be activated, current must be flowing through all of the opto-couplers that are connected to the STO-1 and
STO-2 terminals of J6, and the drive must be in an ENABlED state. When the opto-couplers are OFF, the drive is in a Safe Torque Off (STO) state and
the PWM outputs cannot be activated by the control core to drive a motor. This diagram shows connections that will energize all of the opto-couplers
from an internal current-source. When this is done the STO feature is overridden and control of the output PWM stage is under control of the digital
control core.
If not using the STO feature, these connections must be made in order for the
XM2
to be enabled.
Current must flow
through all of the opto-
couplers before the XM2
can be enabled
* Sto bypass connections on the XM2 and Xenus
Xel/XPl/XMl models are different. if both drives
are installed in the same cabinet, the diode
should be wired as shown to prevent damage
that could occur if the Sto bypass connectors
are installed on the wrong drive. the diode is not
required for Sto bypass on the XM2 and can be
replaced by a wire between pins 7 and 9.
Note: STO applies to
Axis-A AND Axis-B
DANGER
Refer to the Xenus Plus Dual-Axis STO User Manual
The information provided in the Xenus Plus Dual-Axis STO User Manual must be
considered for any application using the XM2 drive’s STO feature.
Failure to heed this warning can cause equipment damage, injury, or death.
