2.
Set selector switch to position 0 (OFF).
3.
Change to main menu and select the
Thermal test
simulation value via the
Proof test (motor prot.)
parameter
M1021
(Do not yet activate simulation: white
dot).
4.
Set
Safe ESDa
and
Safe ESDb
input signals to 0 V (low).
➥
Safety operation is initiated.
5.
Activate motor protection simulation: Press push button
Ok
(black dot)
➥
Safety function is correct, if:
-
For “SIL motor protection” = active configuration:
-
Safety operation is stopped.
-
A SIL fault signal is issued via the
SIL failure
output.
-
For “SIL motor protection” = inactive configuration:
-
Safety operation is not stopped.
-
Nevertheless, a SIL fault signal is issued via the
SIL failure
output.
6.
Set
Safe ESDa
and
Safe ESDb
input signals to +24 V DC (high) after the
test.
7.
Reset simulation or exit the simulation menu and reset selector switch to initial
position.
8.4.5.
Check Safe ESD reaction to “Limit seating with overload protection” (limit and/or torque evalu-
ation)
Configuration
This test is required for the following versions or configurations:
●
Actuator with electromechanical control unit
●
One of the following safety functions:
-
Safe ESD function “Safe CLOSING” (Safe ESD in direction CLOSE)
-
Safe ESD function “Safe OPENING” (Safe ESD in direction OPEN)
●
Configuration of “SIL seating”
= “Limit seating with overload protection”
(Safety operation is stopped by limit switch tripping and/or torque switch tripping
(overload protection).
Test procedure
During the test, the reaction of the Safe ESD function to limit switch tripping and/or
torque switch tripping during safety operation is checked.
During Safe ESD operation, the actuator has to stop when reaching the position set
via limit switching. Safe ESD operation must also be stopped if the tripping torque
set via the torque switching is exceeded.
The red test buttons [1] and [2] of the control unit are used for the test. These can
be used to operate the switches manually.
Figure 14: Electromechanical control unit
●
Turn test button [1] in direction of the LSC arrow: Limit switch CLOSE trips.
●
Turn test button [1] in direction of the TSC arrow: Torque switch CLOSE trips.
●
Turn test button [2] in direction of the LSO arrow: Limit switch OPEN trips.
●
Turn test button [2] in direction of the TSO arrow: Torque switch OPEN trips.
Information
If one of the test buttons (TSC/TSO) is turned without performing a safety operation,
a SIL fault signal is issued!
Test sequence
1.
Operate actuator in mid-position or at sufficient distance from the end positions.
32
Part-turn actuators
Tests and maintenance
with AC 01.2-SIL/ACExC 01.2-SIL