12
Service
Error states of the MOVISAFE® CS..A safety card
Manual – MOVISAFE
®
CS..A Safety Card
97
Input error
If the safety card detects an error at a safe digital input, the affected safe digital inputs
is switched to the safe state. If the affected safe digital input is parameterized as dual-
channel, both inputs are switched to the safe state. In the FS-protocol, the bits of the
affected safe digital inputs are set to "0" and the error bit is set to "1".
In addition, the corresponding error code is transferred for the input error that oc-
curred.
INFORMATION
If a safe digital input is assigned to a drive safety function via the function assign-
ment, then this drive safety function is selected in the event of an input error.
At a safe digital input with detected error, the error must first be resolved and the safe
state established before an acknowledgment of the input error. In this way, a drive
safety function is not erroneously selected after acknowledgment of an input error.
Encoder error
If the safety card detects an error in the encoder system, this leads to a warning in the
absence of an activated drive safety function. The safety card continues to remain op-
erationally ready. If at least one drive safety function is active, this leads to an encoder
error. In addition, all active instances of the drive safety functions assume an error
state. If the drive safety function SSM is parameterized, this always leads to an en-
coder error. In addition, the corresponding error code is transferred for the encoder
error that occurred.
The acknowledgment of the encoder error with activated drive safety function leads to
a restart of the drive safety function with the following changes:
•
SOS: The limit positions are recalculated.
•
SDI: The limit position is recalculated.
•
SLI: System error.
•
SLS: The monitoring delay and the transition ramp are recalculated.
•
SSx: The monitoring delay and the delay are recalculated.
•
SSR: The monitoring delay restarts.
INFORMATION
The acknowledgment of a limit value violation leads to a different behavior of the acti-
vated drive safety function than the acknowledgment of an encoder error.
The response to an encoder error can be suppressed with the "Encoder error muting"
function. The "Encoder error muting" function can be activated at a safe digital input or
via the safe process data. Refer to the "Encoder error muting" chapter for more in-
formation.
System error
In the case of a system error, all safe digital inputs and all safe digital outputs are
switched to the safe state. In addition, the drive safety function STO is executed
without delay and the outputs F-DO0 and F-DO1 are deactivated. The safety card is
set to the safe state.
In the FS protocol, the bits of the safe digital outputs F-DO0 and F-DO1 and inputs F-
DI00, F-DI01, F-DI02 and F-DI03 are set to "0" and the bits for the drive safety func-
tion STO and the error are set to "1".
In addition, the corresponding error code is transferred for the system error that oc-
curred.
24842532/EN – 04/2018
