8
05.01
8.4 Drive modules
8-250
©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
8.4.2
Description of the interfaces and functions
The diagram of the terminals in Fig. 8-7 shows, in a simplified form, a 2–axis
611 feed module – comprising power module, control unit with High Perfor-
mance/High Standard.
Reader’s note
Control unit with digital and PROFIBUS DP interface
––> refer to Chapter 4.
Signaling contact, relay, start inhibit
When connecting contacts AS1/AS2 in series, a contact voltage drop up to
max. 0.2 V must be taken into account for the lifetime of the contacts (100000
switching operations). For a 24 V switching voltage, due to the non–linear con-
tact characteristics, from experience, five contacts can be simply connected in
series without encountering any problems.
Pulse enable/start inhibit
When terminal 663 is energized, this initiates two functions:
The pulse enable and inhibit are effective via an optocoupler input after 1 ms
for a specific axis or for 2–axis modules, for a specific module.
The start inhibit, terminal 663 open–circuit, acts with a delay of approx. 40
ms after terminal 663 is inhibited due to the drop–out delay of the start inhibit
relay.
The start inhibit supports safety–relevant functions, refer to Section 8.5.
For pulse inhibit/start inhibit, the drives ”coast down” without being braked.
Switch on terminal 663 after the ready signal of the power supply (terminals 72
to 74); when stopping after a power failure, terminal 663 must remain driven by
means of the voltage backup until the motors have reached a standstill.
Further, the 611D 1–axis and 2–axis modules and 611 universal HRS with
PROFIBUS interface also have a pulse enable signal that acts on specific axes.
The control is realized through NC/PLC interface signals via the digital drive bus
or via the PROFIBUS DP interface. The signals are effective, delayed corre-
sponding to the appropriate cycle times.
FR+
+24 V enable voltage for the internal enable signals.
The terminal may only be used to enable the associated drive group.
FR–
0 V enable voltage for the internal enable signals.
Terminals AS1,
AS2
Terminal 663
Terminal 9
Terminal 19
8 Important Circuit Information
02.07
