Siemens 6SN1123-1AA00-0DA2 Configuration Manual page 256

05.08
05.01
Notice
The start inhibit relay has pick–up and drop–out delay times of
max. 40 ms. The external wiring must be connected to terminals AS1/AS2 so
that it is short–circuit proof.
One side of the excitation coil of the safety relay is connected to the grounded
electronics chassis (PELV circuit according to DIN VDE 0160). When supplying
the excitation coil (relay coil) from an external 24 V power supply, its negative
pole must be connected to ground potential. The external 24 V power supply
must fulfill the requirements for a PELV circuit in compliance with DIN VDE
0160.
Table 8-1
1) I = input; O = output; NC = NC contact
2) When the AS1/AS2 contacts are connected in series a contact resistance of
3) In accordance with EN 60204–1 (machine safety), control transformers must be used
Warning
!
Only qualified personnel may install and commission the "safe standstill"
function.
All of the external safety–relevant cables, e.g. control cable for the safety relay,
feedback signal contacts, must be routed so that they are protected, e.g. using
cable ducts. The possibility of short–circuits and cross–circuits must be
excluded.
© Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
8.5 Start inhibit in the drive modules/safe standstill
Technical data of the safety relay
Termi- Designation
nal
2)
AS1 Contact 1
2)
AS2 Contact 2
663 Control input
"start inhibit"
9 Enable voltage
FR+ (internal)
19 Reference
FR– (external)
approx. 0.20 Ohm must be taken into consideration over the lifetime of the contacts.
For a 24 V switching voltage, due to the non–linear contact characteristics, from
experience, five contacts can be simply connected in series without encountering
any problems.
for AC control voltages.
8 Important Circuit Information
Description Type
1)
Feedback signal NC 30 V DC/max. 2 A
contact, relay
Start inhibit 250 V AC/max. 1 A
Nominal resist- I 21 – 30 V DC
ance of the ex- Max. switching frequency:
citation coil 6/min
600 Ω ... 1000 Ω
Electrical lifetime: min.
100.000 operating cycles
Mechanical lifetime: 10 mil-
lion operating cycles
O + 24 V
O Chassis ground
Section
3)
8-255
8