WEG CFW-11 User Manual - page 56
Installation and Connection
3
CFW-11 | 3-35
ATTENTION!
In case of a multiple fault in the power stage of the inverter, the motor shaft can rotate up to 360/
(number of poles) degrees even with the activation of Safety Stop function. That must be considered
in the application.
NOTE!
Inverter Safety Stop function is only one component of the safety control system of a machine and/or
process. When inverter and its Safety Stop function is correctly used and with other safety components,
it’s possible to fulfill the requirements of standard EN 954-1 / ISO 13849-1, Category 3 (machine
safety) and IEC/EN 61508, SIL2 (safety control/signaling applied to processes and systems).
The parameter P0029 shows if the inverter has identified correctly SRBXX board. See Bit 9 in
for details.
Table 3.9 - Content of P0029 parameter
Bits
15 14 13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
1
0 0 = with
braking IGBT
1 = without
braking IGBT
0 0 = control circuit
is supplied from an
external +24 Vdc
power supply
1 = control circuit
is fed by the
inverter SMPS
0 = inverter
without safety
stop option
1 = inverter
with Safety
Stop option
0 = inverter
without RFI filter
1= inverter
with RFI filter
Voltage rating of the
inverter:
00 = 200...240 V
01 = 380...480 V
10 = 500...600 V
11 = 500...690 V or
660/690 V
Inverter output rated current
Hexadecimal digit #4
Hexadecimal digit #3
Hexadecimal digit #2
Hexadecimal digit #1
3.3.1 Installation
NOTE!
If the degree of protection of the used inverter is lower than IP54, it must be installed inside an IP54
(minimum) cabinet.
Table 3.10 - XC25 terminals (Safety Stop terminals) signals
XC25 Terminals
Function
Specifications
1
STO1
Terminal 1 of safety relay K1 coil
Coil rated voltage: 24 V, range: 20…30 Vdc
Coil resistance: 960 Ω ± 10 % @ 20 °C (68 ºF)
2
GND1
Terminal 2 of safety relay K1 coil
3
STO2
Terminal 1 of safety relay K2 coil
Coil rated voltage: 24 V, range: 20…30 Vdc
Coil resistance: 960 Ω ± 10 % @ 20 °C (68 ºF)
4
GND2
Terminal 2 of safety relay K2 coil
NOTE!
Terminals XC25: 2 and XC25: 4 are not internally connected to the reference of the inverter power
supply +24 V. These terminals are often connected to the control terminal XC1:11.
NOTE!
Follow recommendations of
Item 3.2.5 Control Connections on page 3-25
.