Festo CMMT-AS-C2-3A-...-S1 Series, Инструкции и руководство по установке

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The safety request is passed on to the servo drive on 2 channels via the inputs
#STO­A and #STO­B at the connection [X1A]. This safety request results in the
2­channel switch­off of the driver supply to the servo drive's power output stage.
The safety relay unit can use the STA diagnostic output to monitor whether the
safe status has been reached for the safety sub­function STO.
SBC connection example
The safety sub­function SBC (safe brake control) is triggered by an input device
that makes the safety request.
1 Input device for safety request
(e.g. light curtain)
2 Safety relay unit
3 Servo drive CMMT­AS
4 Control (here solenoid valve
example) of the clamping unit
Fig. 10 SBC sample circuit
Information on the sample circuit
The safety request is passed on to the servo drive on 2 channels via the inputs
#SBC­A and #SBC­B at the connection [X1A].
–
The request via the input #SBC­A switches off power to the signals BR+ and
BR­ at the connection [X6B]. This de­energises and closes the holding brake.
– The request via the input #SBC­B switches off power to the signal BR­EXT at
the connection [X1C]. This shuts off power to the control of the external
clamping unit. The clamping unit closes.
– The safety relay unit monitors the SBA diagnostic output and checks whether
the safe status has been reached for the safety sub­function SBC.
8.8 Interfaces
Observe requirements for mating plug è Description Assembly, Installation.
8.8.1 [X1A], Inputs and outputs for the higher-order PLC
The I/O interface [X1A] is located on the top of the device. This interface offers
access to functional and safety­related inputs and outputs of the device. These
include, for example:
–
Digital inputs for 24 V level (PNP logic)
– Digital outputs for 24 V level (PNP logic)
– Signal contact for safety chain (RDY­C1, RDY­C2)
– Differential analogue input ±10 V control voltage
The inputs and outputs of this I/O interface are used for coupling to a higher­
order PLC. The safety­related inputs and outputs are connected to a safety relay
unit.
[X1A] Pin Function Description
24 RDY­C1
23 RDY­C2
Normally open contact: ready for
operation message (Ready)
22 STA Diagnostic output Safe torque off
acknowledge
21 SBA Diagnostic output Safe brake
control acknowledge
20 –
19 –
Reserved, do not connect
18 SIN4 Release brake request
17 GND Reference potential (ground)
16 TRG0 Fast output for triggering external
components, channel 0
15 TRG1 Like TRG0, but channel 1
14 CAP0 Fast input for position detection,
channel 0
13 CAP1 Like CAP0, but channel 1
12 #STO­A Control input Safe torque off,
channel A
[X1A] Pin Function Description
11 #STO­B Control input Safe torque off,
channel B
10 #SBC­A Control input Safe brake control,
channel A
9 #SBC­B Control input Safe brake control,
channel B
8
7
6
5
– Reserved, do not connect
4 ERR­RST Error acknowledgment
3 CTRL­EN Output stage enable
2 AIN0
1 #AIN0
Differential analogue input
Tab. 15 Inputs and outputs for the higher­order PLC
Requirements for the
connecting cable Individual device Device compound
Shielding Unshielded
Min. conductor cross section
incl. cable end sleeve with
plastic sleeve 0.25 mm
2
–
Max. conductor cross section
incl. cable end sleeve with
plastic sleeve 0.75 mm
2
–
Min. conductor cross section
incl. double cable end sleeve
with plastic sleeve – 0.25 mm
2
Max. conductor cross section
incl. double cable end sleeve
with plastic sleeve – 0.5 mm
2
Max. length 3 m 0.5 m
Tab. 16 Requirements for the connecting cable
8.8.2 [X1C], Inputs and outputs for the axis
The I/O interface [X1C] is located on the front of the device. This interface makes
functional and safety­related inputs and outputs available for components on the
axis. Output BR­EXT is used in conjunction with the safety sub­function Safe brake
control
è Description Safety sub­function.
[X1C] Pin Function Description
10 GND Reference potential
(ground)
9 24 V Power supply output for
sensors
8 GND Reference potential
(ground)
7 LIM1 Digital input for limit
switch 1 (PNP logic,
24 V DC)
6 LIM0 Digital input for limit
switch 0 (PNP logic,
24 V DC)
5 GND Reference potential
(ground)
4 24 V Power supply output for
sensors
3 – Reserved, do not connect
2 REF­A Digital input for reference
switch (PNP logic, 24 V DC)
1 BR­EXT Output for connection of an
external clamping unit
(high­side switch, low test
pulses at #SBC­B are trans­
ferred to BR­EXT)
Tab. 17 Inputs and outputs for the axis
Requirements for the cable
Shielding Unshielded/shielded
1)
Min. conductor cross section including cable end
sleeve with plastic sleeve 0.25 mm
2
Max. conductor cross section including cable end
sleeve with plastic sleeve 0.75 mm
2
Max. length 100 m
1) For safety­related applications, use a shielded cable outside the control cabinet. Otherwise, a shield is not
absolutely essential, but is recommended.
Tab. 18 Requirements for the cable
Shield connection requirements
Connecting the shield
1. On device side, connect cable shield to shield clamp for motor cable.