Installation and Connection
CFW-11M G2 | 3-45
3
3.3.2.4 Periodical Test
Safety Stop function, alternatively safety stop inputs (STO1 and STO2), must be activated at least once a year for
preventive maintenance purposes. Inverter power supply must be switched off and then on again before carrying
out this preventive maintenance. If during testing the power supply to the motor is not switched off, safety integrity
is no longer assured for the Safety Stop function. The drive must therefore be replaced to ensure the operational
safety of the machine or of the system process.
3.3.2.5 Examples of Wiring Diagrams of the Inverter Control Signal
It is recommended to use inverter DI1 and DI2 digital inputs set as 3-wire start/stop commands and the wiring
diagrams of inverter control signal according to
.
Start
Stop
CFW-11
XC1:1 - DGND*
XC1:12 - COM
XC1:13 - +24 V
XC1:15 - DI1
XC1:16 - DI2
XC25:2 - GND (R1-)
XC25:1 - STO1 (R1+)
XC25:3 - STO2 (R2+)
XC25:4 - GND (R2-)
Safety relay
(a) STO or SS0 safety function (without an external safety relay)
Start
A1 A2
14 24
48 58
13 23 47 57
Stop
CFW-11
XC1:11 - DGND*
XC1:12 - COM
XC1:13 - +24 V
XC1:15 - DI1
XC1:16 - DI2
XC25:2 - GND (R1-)
XC25:1 - STO1 (R1+)
XC25:3 - STO2 (R2+)
XC25:4 - GND (R2-)
External
safety relay
(b) SS1 safety function with an external safety relay
(*)
Note:
(*)
For specifications of external safety relay, which is required to realize SS1 (stop category 1), refer to
Item 3.3.3 Technical Specifications on page 3-46
Figure 3.48:
(a) and (b) Inverter control wiring examples (XC1 and XC25 terminals) to realize STO (or SS0, i.e., stop category 0) and SS1
(stop category 1) safety functions according to IEC/EN 61800-5-2 and IEC/EN 60204-1 standards - DI1 and DI2 inputs set as 3-wire start/
stop commands