Installation - Festo CMMT-ST-C8-1C-S0 Series Operating Instructions Manual

5 Transport and storage
– Protect the product during transport and storage from excessive stress factors.
Excessive stress factors include:
– Mechanical stresses
– Impermissible temperatures
– Moisture
– Aggressive atmospheres
– Store and transport the product in its original packaging or installed in the
control cabinet. The original packaging offers sufficient protection from typical
stresses.
6 Assembly
Dimensions
Fig. 4: Dimensions [mm]
6.1 Mounting clearances
The series CMMT-ST servo drives can be connected in series.
With effective output currents > 4.5 A mounting clearances may be required on
both sides to allow dissipation of the heat generated during operation by allowing
sufficient air flow.
Detailed information about the required mounting clearances and any derating
that may be necessary as a function of the ambient temperature è Fig. 8
The table below shows the mounting clearances for standard output currents and
ambient temperatures.
Examples Ambient operating temperature
30 °C
Continuous, constant Mounting clearances
output current in con-
trolled operation [A]
4 0 mm
5
6
7
8
Tab. 9: Required mounting clearances (examples)
6.2

Installation

Assembly instructions
– Always install the device vertically in the control cabinet (mains supply line [X9]
underneath).
– Maintain minimum distances and mounting clearance to guarantee sufficient
air flow. The ambient air in the control cabinet must be able to flow through the
device from bottom to top without hindrance. Detailed information about the
required mounting clearances and any power reduction that may be necessary
as a function of the ambient temperature è Fig. 8.
– Take into account the required clearance for the wiring (connecting cables of
the device must be routed from above, from below and from the front).
– Do not mount any temperature-sensitive components near the device. The
device can become very hot during operation (switch-off temperature of the
temperature monitoring function è Technical data).
– When mounting on an H-rail: use a DIN mounting rail TH 35-7.5 or TH 35-15 in
accordance with EN 60715.
– When mounting on the backwall of the control cabinet: screw the device on
vertically and flat to the mounting surface.
40 °C 50 °C
0 mm 0 mm
3 mm
10 mm
3 mm impermissible
15 mm
Mounting the H-rail clamp
• If the H-rail clamp is not premounted, screw it onto the back using the original
screw.
Mounting on an H-rail
1. Attach the device by hooking the top of the H-rail clamp onto the H-rail from
above.
2. Press the lower part of the device onto the H-rail until the H-rail clamp clicks
into place on the H-rail.
Wall mounting
The backwall of the device has a hole at the top and a cutout at the bottom. The
device is screwed vertically and flat to the mounting surface using the hole and
the cutout.
1. If an H-rail clamp is mounted on the back, remove it.
2. Mount the servo drive on the backwall of the control cabinet with suitable
screws while complying with the assembly instructions.
7 Installation
7.1 Safety
WARNING
Danger of burns from hot housing surfaces.
Metallic housing parts can reach high temperatures during operation.
Contact with metal housing parts can cause burn injuries.
• Do not touch metallic housing parts.
• After the power supply is switched off, let the device cool down to room
temperature.
Information for operation with safety functions
NOTICE
Check the safety functions to conclude the installation process and after every
modification to the installation.
During installation of safety-related inputs and outputs, also observe the fol-
lowing:
– Meet all specified requirements, e.g.:
– Surrounding area (EMC)
– Logic and load voltage supply
– Mating plug
– Connecting cables
– Cross-wiring
Additional information è Manual Assembly, Installation.
– The maximum permissible cable length between the safety relay unit and the
plug of the I/O interface is 25 m.
– During installation, make sure you meet the requirements of EN 60204-1
relating to the use of PELV fixed power supplies. In the event of a fault, the
voltage must not exceed 60 V DC. The safety relay unit must switch off its
outputs in the event of a fault.
– A PELV fixed power supply must be used for the safety relay unit and the logic
power supply of the CMMT-ST. The GND (0 V) of the two fixed power supplies
must also be connected to each another. The device power supply and the
power supply of the STO inputs must refer to the same GND potential.
– The wiring between the safety relay unit and the I/O interface of the servo drive
must be installed to ensure that the risk of a short circuit between the conduc-
tors or to 24 V, as well as a cross circuit can be eliminated è EN 61800-5-2,
Annex D.3.1. Otherwise, the safety relay unit must feature detection of shorts
across contacts and, in the event of a fault, must switch off the control signals
on 2 channels.
– Only use suitable mating plugs and connecting cables è Manual Assembly,
Installation. Use wire end sleeves for multicore wires.
– Avoid conductive contamination between neighbouring plug pins.
– Make sure that no bridges or similar can be inserted parallel to the safety
wiring. For example, use the maximum wire cross section or appropriate plastic
wire end sleeves.
– To cross-wire safety-related inputs, use twin wire end sleeves. When cross-
wiring STA diagnostic contacts, a maximum of 10 devices may be cross-wired
è Manual Assembly, Installation.
– The safety relay unit and its inputs and outputs must meet the necessary safety
classification of the safety function required for the specific case.
– Connect each of the control inputs to the safety relay unit on 2 channels.
– If the STA feedback signal of the STO safety sub-function has to be evaluated:
connect diagnostic contact directly to the safety relay unit. The diagnostic
contacts must not be connected in parallel, since a device like this with an
active safety sub-function would report a safe state for all devices.
– Whether the diagnostic contact needs to be evaluated depends on the type of
motor that is connected and the desired safety classification.
– If diagnostic contacts are cross-wired for a device compound: wire diagnostic
contacts in series.
Basic circuitry concept
– Safe sensors – e.g. emergency stop switches, light curtains – are routed to the
safety relay unit (or the safety PLC).
– The safety relay unit requests the safety sub-function on the servo drive via 2
channels and evaluates the feedback signal STA.