NORD Drivesystems BU0230 - Manual (Page 66)

Functional safety with NORD SK 200E frequency inverters
66 BU 0230 GB-2712
Status LEDs
LED
Name Colour Description Signal status Meaning
DS dual
red/green
Inverter status off FI not on standby,

no mains and control voltage
green on FI on standby
green flashing 0.5 Hz FI is ready for switch-on
4 Hz FI is in switch-on block
red/green 4 Hz Warning
Alternating 1…25Hz Degree of overload of switched-on FI
green on +
red flashing
FI not on standby,

Control voltage available but no mains
voltage
red flashing Error, flashing frequency → Error number
Diagnostic LEDs (only SK 2x5E devices and SK 2x0E Size IV)
LED Signal
Name Colour Description Status Meaning
DOUT 1 yellow Digital output 1 on High signal applied
DOUT 2
*
yellow Digital output 2 on High signal applied
DIN 1 yellow Digital input 1 on High signal applied
DIN 2 yellow Digital input 2 on High signal applied
DIN 3 yellow Digital input 3 on High signal applied
DIN 4 yellow Digital input 4 on High signal at digital input 4 or at that for the "safe pulse
block" is indicated
* only in SK2x0E Size IV
With the devices SK 215E and SK 235E, the diagnostic LED DIN4 indicates the status of the input terminals,
89 24V_SH and 88 GND_SH, of the "safe pulse block".
A full description of the diagnostic LEDs can be found in Manual BU 0200 GB.
8.2 Status information
It is possible to access status information by means of the ParameterBox, SimpleBox or via a field bus. This
information is not provided on a fail-safe basis, but rather only for information purposes!
No detailed status information is available for the shut-down method "switch-off of the 24 V supply", as if this
shut-down method is used, the supply voltage to the control electronics of the frequency inverter is switched
off. With the 24V supply switched off, the status LED DS (Drive Status) is off and no communication with the
inverter is possible.
The status of the "safe pulse block" and the digital inputs and outputs can be accessed via the information
parameters and if necessary by means of the status word with communication via a field bus (see Section 4).
For the "safe pulse block" both the status of the input terminals 89, 88 (24V_SH, GND_SH) and the reaction of
the safe pulse block can be queried.
The diagnostic path "Status at the input terminals" is implemented in the form of digital output 4 and can be
accessed directly via parameter P708.
In order to be able to query the reaction of the "safe pulse block", the digital output, a Bus Out bit or a free bit
of the status word (Bit 10 or Bit 13) must be assigned function 39 (STO inactive). The status of this bit can be
read out via the parameters P711 (digital output), P741 [-01] or P741 [-05] (Bus Out bits) or can be transferred
via the bus protocol.