Ross MCSE Series, Operating Instructions Manual

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MSCE Series Operating Instructions
ENGLISH
2. Connect the safety signals to control the device to plug X2D. Observe the different
assignment of plugs for different devices. The type of device can be taken from the
name plate.
7.3.1. Connecting the Supply Voltage
WARNING
Risk of injury due to Electric shock due to incorrect power pack!
f
Use a 24 V DC SELV or PELV circuit in accordance with DIN EN 60204-1 to connect
the power supply for the valve.
f
The PELV power source must be a safety isolation transformer in accordance with
IEC 61558-1 or IEC 61558-2-6, or a power source offering the same degree of
safety as a safety isolation transformer.
f
Make sure that the power source for the SELV power pack adheres to DIN EN 60950.
We recommend using a type Z (max. 2 A) circuit breaker or a micro-fuse (max. 1 A,
inactive) to protect the operating voltage.
7.3.2.
Connect the Signal Contact
The device has a potential-free signal contact (41, 42). A loop covering all safety
modules can be achieved with this signal contact, for example. The maximum voltage
for the signal output is 24 V DC, and the maximum current is 0.2 A.
WARNING
Risk of injury due to valve malfunction!
A valve malfunction (e.g., failure to open the contact) may occur if you use signal outputs
in safety circuits.
f
Never use signal outputs in safety circuits.
Figure 1 on page 3 shows the principle use of the signal output.
7.3.3.
Connect Start Input X2
WARNING
Risk of injury!
The use of the “automatic start” function is only permissible in terms of IEC/EN 60204-1 in
conjunction with other appropriate measures for machine start-up!
f
Make sure that the MCSE safety valve cannot be activated when using the “automatic
start” function. For example, use an additional safety module with start button, which
prevents immediate switch on after release of an emergency OFF button or after applying
the operating voltage.
Start input X2 is not active during control with PP or PM. The MCSE safety valve
performs an automatic start. Start input X2 must be connected with 24 V DC.
Start input X2 is active during control with NCNC or NCNO. Start input X2 can be
connected with a button, for example. Activation of the MCSE safety valve starts when
the button is released.
Actuation of the button is monitored. The button may have a maximum actuation time
between 0.03 s and 3 s. Activation does not take place if the time is exceeded.
The contacts on the X2D plug, M12 female safety inputs have the following assignment:
7.3.4.
Principle Wiring for PP Control
When using the PP control, safety inputs 1 and 2 must each be connected with a
safe output signal. The “automatic start” function is used in this operating mode. X2 is
therefore connected with 24 V DC.
For principle wiring for PP control, see Figure 2 on page 3.
7.3.5.
Principle Wiring for NCNC or NCNO Control
When using the NCNC or NCNO control, the safety switches are supplied by the clock
signal (S21, S11). Safety input 1 (S12) is connected with S11 via the switch. Safety
input 2 (S22) is connected with S21 via the switch. Cross-circuits on the safety inputs
are monitored by the MCSE safety valve in this control. Start (pressurization) takes
place using the start input X2 in this control.
For principle wiring for NCNC control, see Figure 4 on page 3.
For principle wiring for NCNO control, see Figure 5 on page 3.
7.3.6.
Principle Wiring for PM Control
Input M of the MCSE safety valve must be connected with the safe negative output
D0-M (e.g., safe output assembly) of a PLC. Input P of the MCSE safety valve must
be connected with the safe positive output D0-P (e.g., safe output assembly) of a PLC.
The “automatic start” function is used in this operating mode, therefore X2 must be
connected with 24 V DC. The contacts have the following assignment for PM control:
For principle wiring for PM control, see Figure 3 on page 3.
7.3.7.
Connect Ground (FE, function potential compensation)
A ground connection is available on the device. To discharge EMC interferences,
connect the FE connection to the MCSE safety valve via a low-impedance line to
functional earth. Using the valve without FE connection is not allowed.
The line cross-section must be selected according to the application and implemented
according to DIN EN 60204-1/IEC 60204-1.
8. Commissioning and Operation
CAUTIONS
Danger of injury while working on the system!
Working while the system is running can cause major injuries from moving machinery.
f Maintain a sufficient safety distance to moving machine components.
f Do not work on the system while it is running.
Before commissioning, the installation must be carefully inspected by a qualified,
trained professional.
Make sure that the technical specifications match the operating criteria of the machine
and/or the pneumatic system.
Make sure that all plugs are correctly connected.
Always set the compressed air
supply to a level that ensures that the minimum operating pressure is adhered to (see
section 10 Technical Specifications).
8.1. Take the MCSE Safety Valve into Operation
Proceed as follows in order to take the MCSE safety valve into operation:
1. Switch on the pneumatic supply.
2. Switch on the 24 V DC supply voltage.
8.1.1.
“Pressurization” Function
If the MCSE safety valve should pressurize the machines, you must switch both safety
inputs 1 and 2 with the right signal sequence. If the signal sequence is not correct, the
MCSE safety valve goes into the safe state. Exhausting of the operating line is the safe state.
8.1.2.
“Exhaust” Function
If the MCSE safety valve should exhaust the machines, you must switch both safety
inputs 1 and 2 with the right signal sequence. The MCSE safety valve goes into the
safe state if the MCSE safety valve is isolated from the supply voltage or if a fault
occurs during operation.
Exhausting of the operating line is the safe state.
Exhausting of the valve may not be restricted.
8.1.3.
Signal Sequence when Switching On
The following signal sequence results when switching on the MCSE safety valve (see
Figure 6 on page 3).
The MCSE safety valve is not supplied with 24 V DC before time 1. Signal output (41,
42) is open (41, 42=0) and the RUN-LED is off (0). The MCSE safety valve exhausts
the operating line.