Control Techniques M'Ax 403, Руководство пользователя

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M’Ax User Guide
7
Issue Number: 4
Parallel and multiple connections
The following functions are available on more than one connector (the
related terminals are connected in parallel in the Drive):
0V COMMON
Hardware enable
SLM-and-user back-up supply input
24V user supply
The functions shown in each group below are electrically identical in the
Drive:
• 24V loop input
24V loop output
SLM-and-user back-up supply
• Drive-status input
Drive-status output
• 24V user supply
24V SLM supply
Signal-ground connections
The Drive has two types of 0V connection named 0V and 0V COMMON
which are electrically isolated from each other in the Drive. A single 0V
connection appears on the SIM ENC connector for use with the
simulated-encoder and analog outputs; a 0V COMMON connection
appears on each of the remaining connectors for use with all the other
signal connections.
0V and 0V COMMON must be used only in conjunction with their related
signal connections and must not be used in place of each other.
If ground-loop currents cause problems under the following conditions...
• The Drive is controlled by an analog speed reference
• 0V and 0V COMMON are connected direct to ground in external
equipment
... indirectly ground the 0V COMMON connections through a 10nF 2kV
ceramic capacitor. Ensure that input signals remain referenced to their
related 0V-line (0V COMMON or 0V) (see Additional ground connections
for the signal cables described in EMC emission standards - instructions
in Chapter 2 Installing the Drive of the Installation Guide).
2.5 Example signal connections
Isolation
The signal connections are isolated from the power
circuits by basic insulation only. Ensure that all
external control circuits are separated from human
contact by at least one layer of insulation rated for use
at the ac supply voltage.
Incorrect connections
Ensure that a plug carrying a 24Vdc supply intended
for the MC connector is not inserted in the MULTIDROP
IN/PC connector. (Damage may occur to the EIA232
port on the MULTIDROP IN/PC connector if 24Vdc is
applied to terminal 7.)
Analog outputs
The analog outputs (SIM ENC connector pins 9 and 11)
are intended for indication purposes, not for use in
process control. The signal level on Analog output 2
may become undefined at the following occasions:
During the process of saving parameter values
At power-up and power-down
Before continuing, see Appendix A Signal Connectors on page 76 for
details relating to the signal connections, including those to the SLM.
For making the required control and SLM connections refer to the
example circuit diagrams that follow. Make monitoring connections as
required (they may be omitted for product familiarisation). Example
signal connections are shown for the following:
If position information is to be retained when the Drive is powered-down
for any reason, see Types of back-up supplies on page 17.
WARNING
CAUTION
CAUTION
Application Version(s)
Keypad mode
(setting up and/or product familiarisation)
_AN
High-precision analog speed control in Terminal
mode _AN
Standard-precision analog speed control in Terminal
mode _SL
Remote control by a system controller or plc
supplying quadrature AB, F/D signals, or directional
pulse inputs All
Serial communications
(remote control and/or setting up)
All
High-precision speed control by motion controller
supplying an analog speed reference _AN
Standard-precision speed control by motion
controller supplying an analog speed reference _SL
Remote control by motion controller communicating
by
)
technology
All