Led Displays - Ross MCSE Serie Instrucciones De Servicio

MCSE Series Operating Instructions
The MCSE safety valve is supplied with 24 V DC at time 1. The RUN LED and all other
LEDs flash briefly when switched on. The device performs a self-test. This self-test
takes a maximum of 1.5 s. After the self-test (4) has been successfully carried out,
the MCSE safety valve is in the ready state (2). The RUN-LED (1) is illuminated in the
ready state and the signal output is closed (41, 42=1). The MCSE safety valve is ready
for control via both safety inputs.
If the device is disconnected from the supply voltage at time 4,
• The MCSE safety valve exhausts,
• the RUN LED is not illuminated and
• the signal output is open (41, 42=0).
8.1.4. Signal Sequence for PP Control
The following signal sequence results during PP control of the MCSE safety valve (see
Figure 8 on page 3).
The MCSE safety valve is in the ready state before time 1, but is not activated. In this
state (MCSE=0) the MCSE safety valve exhausts the operating line.
Signal input S22 is actuated with 24 V at time 1. If signal input S12 is also actuated with
24 V within synchronization time (4), the MCSE safety valve goes into the pressurized
state (MCSE=1) at time 2. OUT LED illuminates and indicates the activated state.
The synchronization time for monitoring (4) is 0.5 s. The state of signal inputs 1 and 2
is displayed by the IN 1 LED and IN 2 LED.
If the interval between signal inputs 1 and 2 is longer than the synchronization time
for monitoring, the MCSE safety valve remains in the non-activated state. In this state
(MCSE=0) the MCSE safety valve exhausts the operating line and OUT LED is not
illuminated. The IN 1 LED and IN 2 LED flash fast and indicate that signal inputs 1
and 2 have not been actuated synchronously. If signal input 1 and/or signal input 2
is actuated with 0 at time 3, the MCSE safety valve goes into the non-activated state
(MSCE=0) and exhausts the operating line. OUT LED is off. Signal inputs 1 and 2
must be de-actuated before re-pressurize. The IN 1 and IN 2 LEDs are off in this state.
8.1.5. Signal Sequence for NCNC Control
The following signal sequence results during NCNC control of the MCSE safety valve
(see Figure 10 on page 3).
The MCSE safety valve is in the ready state before time 1, but is not activated. In this
state (MCSE=0) the MCSE safety valve exhausts the operating line.
Signal input S22 is connected with clock output S21 at time 1 via the switch. If
signal input S12 is connected with clock output S11 via the second switch within
synchronization time (6), the MCSE safety valve goes into the "wait for start" state at
time 2. The MCSE safety valve remains in the non-activated state (MCSE=0) and the
exhausts the operating line. OUT LED indicates this state by flashing slow.
The synchronization time for monitoring the signal inputs is 0.5 s. The state of signal
inputs 1 and 2 is displayed by the IN 1 LED and IN 2 LED.
If the interval between signal inputs 1 and 2 is longer than the synchronization time
for monitoring, the MCSE safety valve remains in the non-activated state. In this state
(MCSE=0) the MCSE safety valve exhausts the operating line and OUT LED is not
illuminated. The IN 1 LED and IN 2 LED flash fast and indicate that signal inputs 1 and
2 have not been actuated synchronously.
If start signal X2 is changed from 0 V to 24 V (positive flank) at time 3 and is
changed back from 24 V to 0 V (negative flank) at time 4, the MCSE safety goes into
the pressurized state (MCSE=1) at time 4. OUT LED illuminates and indicates the
activated state. The time for monitoring signal X2 is between a minimum of 0.03 s and
maximum 3 s. If X2 is not actuated within this monitoring time, the MCSE safety valve
remains in the exhausted state (MCSE=0).
If the connection between S11 and S12 or between S21 and S22 is interrupted via the
corresponding switch after time 4, the MCSE safety valve goes into the non-activated
state (MCSE=0) and exhausts the operating line at time 5. OUT LED is off. Both signal
inputs 1 and 2 must be open/interrupted to re-pressurize. The IN 1 and IN 2 LEDs are
off in this state, and Start-Button X2 need to be pressed again.
8.1.6. Signal Sequence for NCNO Control
The following signal sequence results during NCNO control of the MCSE safety valve
(see Figure 11 on page 3).
The MCSE safety valve is in the ready state before time 1, but is not activated. In this
state (MCSE=0) the MCSE safety valve exhausts the operating line.
The switch opens the connection between signal input S22 and clock output S21 at
time 1. If signal input S12 is connected with clock output S11 via the second switch
within synchronization time (6), the MCSE safety valve goes into the "wait for start"
state at time 2. The MCSE safety valve remains in the non-activated state (MCSE=0)
and the exhausts the operating line. OUT LED indicates this state by flashing slow.
The synchronization time for monitoring the signal inputs is 0.5 s. The state of signal
inputs 1 and 2 is displayed by the IN 1 LED and IN 2 LED.
If the interval between signal inputs 1 and 2 is longer than the synchronization time
for monitoring, the MCSE safety valve remains in the non-activated state. In this state
(MCSE=0) the MCSE safety valve exhausts the operating line and OUT LED is not
illuminated. The IN 1 LED and IN 2 LED flash fast and indicate that signal inputs 1 and
2 have not been actuated synchronously.
If start signal X2 is changed from 0 V to 24 V (positive flank) at time 3 and is
changed back from 24 V to 0 V (negative flank) at time 4, the MCSE safety goes into
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the pressurized state (MCSE=1) at time 4. OUT LED illuminates and indicates the
activated state. The time for monitoring signal X2 is between a minimum of 0.03 s and
maximum 3 s. If X2 is not actuated within this monitoring time, the MCSE safety valve
remains in the exhausted state (MCSE=0).
If the connection between S11 and S12 is opened via the corresponding switch after
time 4 or the connection between S21 and S22 is closed by the corresponding switch,
the MCSE safety valve goes into the non-activated state (AS3-SOV=0) and exhausts
the operating line at time 5.
OUT LED is off. Both signal inputs 1 and 2 must be open/closed to re-pressurize. LED
IN 1 and IN 2 are off in this state and Start-Button X2 need to be pressed again.
8.1.7. Signal Sequence for PM Control
The following signal sequence results during PM control of the MCSE safety valve
(see Figure 9 on page 3).
The MCSE safety valve is in the ready state but is not activated before time 1. In this
state (MCSE=0) the MCSE safety valve exhausts the operating line.
Signal input M is actuated with 0 V at time 1. If signal input P is also actuated with 24 V
within synchronization time (4), the MCSE safety valve goes into the pressurized state
(MCSE=1) at time 2. OUT LED illuminates and indicates the activated state.
The synchronization time for monitoring (4) is 0.5 s. The state of signal inputs P and M
is displayed by the IN 1 LED and IN 2 LED.
If the interval between signal inputs P and M is longer than the synchronization time
for monitoring, the MCSE safety valve remains in the non-activated state. In this state
(MCSE=0) the MCSE safety valve exhausts the operating line and OUT LED is not
illuminated. The IN 1 LED and IN 2 LED flash fast and indicate that signal inputs 1 and
2 have not been actuated synchronously.
If signal input P is not actuated with 24 V or if signal input M is not actuated with 0
at time 3, the MCSE safety valve goes into the non-activated state (MCSE=0) and
exhausts the operating line. OUT LED is off.
The signal input must be at 0 V and signal input M not at 0 V to re-pressurize. The IN
1 and IN 2 LEDs are off in this state.
8.1.8. Signal Sequence when a Fault Occurs
The MCSE safety valve goes into the safe state if a fault occurs during operation of the
MCSE safety valve. Exhausting of the operating line is the safe state.
If an error occurs:
• The MCSE safety valve exhausts the operating line,
• opens the signal output and
• the red LED shows a flash code for the fault.
The following signal sequence results when a fault occurs (see Figure 7 on page 3).
The device works fault-free at time 1. The signal output (41, 42=0) opens at time 2 if
a fault (3) occurs. The ERR LED shows a fault number via a flash consisting of long
and short sequences.
You can analyze the error with the help of this error number. The device is switched off
at time 4 and the fault is rectified. If the device is switched on at time 5 and the fault
has been rectified, the device is ready to operate again at time 6 after the self-test (7,
approx. 1.0s).
The following table shows an overview of flash codes with the corresponding cause
of fault.
Flashes
LED
Long Short
1 1
1 2
2 4
4 3
3 8
ERR 3 9
4 1
4 2
3 4
2 9
3 1

8.2.1. LED Displays

The LEDs flash briefly if the MCSE safety valve is supplied with 24 V.
The normal non-activated operating state (exhaust) is:
• RUN: illuminated
• IN 1, IN 2, OUT, ERR: off
The normal activated operating state (pressurize) is:
• RUN, IN 1, IN 2, OUT: illuminated
• ERR: off
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Error Cause
Supply voltage too low
Supply voltage too high
Cross-circuit between inputs S12 and S22
Supply voltage is detected as an AC voltage
Time monitoring during pressurization
Time monitoring during exhaust
Time monitoring during exhaust
Time monitoring during exhaust
Undefined level on input X2
Undefined level on input S12
Undefined level on input S22
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