Siemens SIMODRIVE 611 Planning Manual page 224

9 Important Circuit Information
9.2 Infeed modules
Terminal 9
Terminal 48
Terminals NS1,
NS2
9
Terminal 63
Terminal 64
9-224
FR+
+24 V enable voltage for the internal enable signals of the NE and drive modu-
les
Max. load: 500 mA
Start
This terminal has the highest priority. Terminal 48 is used to initiate a defined
power–on and power–off sequence of the NE module.
If terminal 48 is energized, then the pre–charging sequence is internally initia-
ted. After the DC link has been charged up, the pre–charging contactor is ope-
ned and the main contactor pulls in. The internal enable signals are then availa-
ble.
If terminal 48 is de–energized, then initially, after approx. 1 ms the internal pulse
enable signals are inhibited and then the DC link is electrically isolated from the
line supply, with a delay caused by the drop–out time of the internal line contac-
tor.
if terminal 48 is de–energized during charging, then charging is first completed
and terminal 48 is only inhibited after charging has been completed, if terminals
NS1–NS2 are jumpered.
Coil circuit of the internal line and pre–charging contactor
When the line contactor is opened by interrupting the coil circuit using floating
contacts, the DC link is safely isolated from the line supply.
The terminals have a safety–relevant function. Disconnection using terminals
NS1–NS2 must be realized either at the same time or delayed to terminal 48
Start (refer to Section 9.7 circuit examples = 2 and = 4).
Max. cable length 50 m (2–conductor cable) for 1.5 mm
Pulse enable
This terminal has the highest priority for the pulse enable and inhibit. The ena-
ble and the inhibit act, after approx. 1 ms, simultaneously on all of the modules
including the NE module. When the signal is withdrawn, the drives "coast down"
unbraked.
Drive enable
The drives modules are enabled using terminal 64. The enable and inhibit act
simultaneously on all modules after approx. 1 ms.
If terminal 64 is inhibited, n
set
as follows:
S
For MSD/IMM 611A, the drives are braked along the selected ramp, and the
pulses are cancelled after a selectable speed has been fallen below.
If terminal 81 is simultaneously inhibited, the drives brake along the current
limit.
S
For FD 611A, after the ar set timers have expired (as supplied: 240 ms) all of
the controllers and pulses are inhibited. The drives brake along the current
limit.
2
cross–section
is set to 0 for all drives and the drives are braked
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
05.01