5 Electrical installation
Caution
Unexpected and unintended movement of the drive during mounting, installation
and maintenance work.
Before starting work: Switch off power supplies. Cancelling the enable signal
on the controller is not sufficient.
Secure the power supplies against accidental reactivation.
5.1 Connections and cables
Caution
Unexpected and unintended movement of the drive as a result of incorrectly
assembled cables.
Only use the plug connectors provided and preferably the cables listed in the
specified accessories è www.festo.com/catalogue.
Lay all flexible cables so that they are free of kinks and mechanical stress; if
necessary in a drag chain. Observe the instructions for the axis and the addi
tional components.
ESD protection
At unassigned plug connectors, damage can occur to the device or to
other system parts as a result of ESD (electrostatic discharge).
Observe the handling specifications for electrostatically sensitive
devices.
Seal unassigned plug connectors with protective caps.
Earth system parts prior to installation.
Use appropriate ESD equipment (e.g. shoes, earthing straps, etc.).
The plug connectors used for connecting the motor controller are included in the
scope of delivery (assortment of plugs NEKM-C-14). Other accessories: NEBM
according to the drive configuration in various connector types and lengths
è www.festo.com/catalogue
5.2 [X1] IO-Link/I-port control interface and digital inputs/outputs
Note
The IO-Link/ I-Port interface is not electrically isolated. Under certain circum
stances, the CMMO-ST can override the electrical isolation of an IO-Link master.
Connection Pin Function
X1
111
111
Digital I/O modules (DIN/DOUT)
1 +24 V (OUT) Output +24 V e.g. power supply to a
potential-free relay contact for the
ENABLE input.
Not overload-proof! Max. 100 mA
permissible.
2 0 V (G ND) Reference potential for output signals
3 DOUT2 Output 2, parameterisable
4 DOUT1 Output 1, parameterisable
5 Ready Output “Ready for Operation”
6 ENABLE Input “controller enable”
1)
7 – no function, not connected intern
ally
2)
8 –
IO-Link/I-Port
9 L– 0 Volt (GN D)
10 C/Q IO-Link/I-Port signal
11 L+ 24V on the IO-Link/I-Port ICs (not con
nected to the logic power supply to
X9)
1) The required signals for controller enable are parameterisable
2) Pins 7 and 8 can be used for the 4th and 5th cores on the I-Port/IO-Link cable.
Fig. 7 Connection of [X1] control interface with plug (NEKM-C-14)
5.3 [X1A] Reference switch
Connection Pin Function
13
13
X1A
1 +24 V
LOGIC
OUT
Voltage output for supplying the reference switch.
Not overload-proof! Max. 100 mA permissible.
2 SIGNAL
Ref
– Input for PNP switch
– switches to +24 V
– NO/NC version
3 GND Reference potential (ground)
Fig. 8 Connection [X1A] reference switch with plug (NEKM-C-14)
5.4 [X2] Encoder
Connection Pin Function
X2
18
1
8
1 A
1)
Incremental encoder signal A+
2 A/ 1)Incremental encoder signal A–
3 B
1)
Incremental encoder signal B+
4 B/ 1)Incremental encoder signal B–
5 N
1)
Incremental encoder signal zero pulse N+
6 N/ 1)Incremental encoder signal zero pulse N7 5 V
(± 10 %)
Supply of the encoder.
Not overload-proof! Max. 100 mA
permissible.
8 0 V Reference potential
1) At each pin: 5 V and Ri = approx. 120 Ω
Fig. 9 Connection [X2] encoder with plug (NEKM-C-14)
5.5 [X3] STO
The STO safety function (“Safe Torque Off”) is described in detail in the document
GDCP-CMMO-ST-STO-…. The STO function should only be used in the manner de
scribed in this document.
Recommendation for initial motor start-up without safety equipment:
– The setup must at least include an emergency stop switching device
– Two-channel switch-off via control ports STO1 [X3.2] andSTO2[X3.3]
Connection
Pin Function
X3
15
15
1 +24 V
LOGIC
OUT
Logic voltage output [X9]
Not overload-proof! Max. 100 mA
permissible.
2 STO1 Control port for STO function: Channel 1
3 STO2 Control port for STO function: Channel 2
4 DIAG1 The acknowledgment contact is closed (low
impedance) when the STO function is
active.
5 DIAG2
Fig. 10 Connection [X3] STO with plug (NEKM-C-14)
5.6 [X6] Motor
Connection Pin Function
X6
16
16
1 String A Connection of the two motor strings
2 String A/
3 String B
4 String B/
5 BR+ Connection of the holding brake
Short-circuit- and overload-proof. 24 V,
max. 1.4 A è 33 W. BR– = GND,
BR+ is switched (24 V load)
6 BR–
Fig. 11 Connection [X6] motor with plug (NEKM-C-14)
5.7 [X9] Power supply
Warning
Electric shock
Injury to people, damage to the machine and system.
For the electrical power supply, use only PELV circuits in accordance with
IEC602041 (Protective Extra-Low Voltage, PELV).
Also observe the general requirements for PELV circuits IEC60204-1.
Use only voltage sources which guarantee reliable electrical isolation of the
operating and load voltage in accordance with IEC60204-1.
Connection Pin Function
X9
51
51
1 Do not connect!
2 Do not connect!
3 Supply of the control electronics (logic supply)
4 Reference potential (0 V) for operating voltage, logic
voltage, STO and controller interface
5 Supply of the power output stage and the motor
(load voltage)
Fig. 12 Connection [X9] with plug (NEKM-C-14)