Information
The Safe STOP OPEN and Safe STOP CLOSE inputs are two independent inputs
with independent functions:
●
If Safe STOP OPEN = low level, the safety function inhibits operation in direction
OPEN (exception ESD OPEN)
●
If Safe STOP CLOSE = low level, the safety function inhibits operation in direc-
tion CLOSE (exception ESD CLOSE)
Permissible input voltage range:
●
High level: 15 – 30 V DC
●
Low level: max. 5 V DC
Signal behaviour of
SIL ready
and
SIL failure
outputs:
●
SIL ready/ Absence of fault to be detected by diagnostics:
NO (NO contact) output = closed
NC (NC contact) output = open
●
SIL fault/ Presence of fault to be detected by diagnostics:
NO (NO contact) output = open
NC (NC contact) output = closed
Customer connections for control
(typical assignment)
Signal
Designation
Wiring diagram
[2] Fieldbus
[1] Parallel
XK 3
XK 31
Digital input for Safe ESD function
Safe ESDa
XK 5
XK 32
Redundant input for Safe ESD function
Safe ESDb
XK 7
XK 33
Reference potential for Safe ESDa and Safe ESDb
0 V
XK 8
XK 35
Digital input for Safe STOP function in direction CLOSE
Safe STOP CLOSE
XK 9
XK 37
Reference potential for Safe STOP CLOSE
0 V
XK 10
XK 36
Digital input for Safe STOP function in direction OPEN
Safe STOP OPEN
XK 11
XK 38
Reference potential for Safe STOP OPEN
0 V
XK 15
XK 40
NO contact of SIL fault signal
SIL ready
XK 14
XK 39
NC contact of SIL fault signal
SIL failure
XK 16
XK 42
Reference potential for SIL fault signal
Com.
SIL fault displayed via
SIL failure
output
Description
Fault causes
SIL
Motor protection tripped
Thermal fault
Torque fault in directions OPEN and/or CLOSE
Torque fault
Current position feedback is outside permissible range.
Fault position feed-
back
One phase of power supply is missing.
Controls are not supplied with mains voltage
Phase failure
The phase conductors L1, L2 and L3 are connected in the wrong sequence.
Phase sequence
fault
The safety-related part of controls is without power supply.
Power supply failure
Temperature within controls housing too high
Failure of heating system for ambient temperatures below –25 °C
Temperature fault
Actuator of valve locked
Failure of actuator
monitoring
Both signals Safe ESDa and Safe ESDb are not simultaneously on the same level.
Fault in redundant
wiring Safe ESD
Internal error of the SIL module
Internal error
For further information on SIL faults and in particular to assist in troubleshooting,
refer to chapter <Indications>.
Installation and commissioning must be recorded and a final installation and
commissioning report must be issued.
19
Part-turn actuators
with AC 01.2-SIL/ACExC 01.2-SIL
Installation, commissioning and operation