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Rev.01 | CERTUS Multifunction Safety Module | © 2017 |
CARLO GAVAZZI Automation
EN
13. Start behaviour
Start mode
Mode Wiring
Manual start (start button monitored)
MS1a
S11 S21
S35
Manual start with feedback from external
contactor expansion
MS1b
S11
S35
S21
Start button
Automatic start
MS2a
S11
S35
S21
Automatic start without monitoring of the
start button
MS2b
S11
S35
S21
Start button
Automatic start without monitoring of the
start button
MS2c
S11
S35
S21
Start button
Start behaviour
13.1 Manual start
A
The start button is monitored. Any change of the
input level must be recognized to accept the start signal
B
The outputs are switched on after the start button is released
(moved from HIGH to LOW at S35;
mode MS1
)
C
An erreously permanently HIGH- or LOW-level
does not lead to a dangerous situation as the
outputs does not become HIGH
D
Contacts (NC) of an external contactor can be
wired in series for monitoring (
mode MS1b
)
13.2 Automatic start
A
The start button is not monitored.
The terminals may be permanently bridged.
B
The outputs are switched on after the start button is
pushed (simply HIGH level;
mode MS2
)
C
An erreously permanently HIGH-level may lead to
a dangerous situation as the outputs immediately
become HIGH
D
Contacts (NC) of an external contactor can be
wired in series for monitoring (
mode MS2c
)
Information:
- The Restart command must be installed outside the danger area in a position where the
danger area and the entire work area concerned are clearly visible.
- It must not be possible to reach the control from inside the danger area.
Attention:
Use in manual mode (start/restart interlock activated) is mandatory where the safety
device controls an access protecting a danger zone. This is to prevent a situation in
which, once a person has passed through the opening, they could remain in the danger
zone without being detected (use as a trip device according to IEC 61496). Failure to
comply with this rule may result in serious risks to people exposed.
