AS-Interface
Safety Monitor
3RK1105-1.E04-.CA0
IEC 61508/EN 954-1
Operating Instructions
Order No.: 3RK1701-2MB21-0AA0
English
4
Read and understand these instructions before installing, operating, or maintai-
ning the equipment.
Reliable functioning of the equipment is only ensured with certified compon-
ents.
The devices must be installed in a switchgear cabinet with the IP32,
IP43 or IP54 degree of protection, depending on the ambient conditions.
The products described herein are designed to be components of a customized
machinery safety-oriented control system. A complete safety-oriented system
may include safety sensors, evaluators, actuators and signaling components. It
is the responsibility of each company to conduct its own evaluation of the effec-
tiveness of the safety system by trained individuals. Siemens AG, its subsidia-
ries and affiliates (collectively "Siemens") are not in a position to evaluate all of
the characteristics of a given machine or product or machine not designed by
Siemens.
Siemens accepts no liability for any recommendation that may be implied or sta-
ted herein. The warranty contained in the contract of sale by Siemens is the sole
warranty of Siemens. Any statements contained herein do not create new war-
ranties or modify existing ones.
The safety monitor is used in an AS-Interface bus system for monitoring protec-
tive equipment such as EMERGENCY STOP switches. It is assigned to safety
category 4 in accordance with EN 954-1.
According to IEC 61508, the safety monitor can be used in loops up to SIL3. The
PFD value of the complete loop must be calculated by the user.
Important! Depending on the choice of safety components to be used the safety
system as a whole may also be assigned to a lower safety category.
For details refer to all the information in the description of the configuration
software and the technical description of the device. These documents contain
all the necessary information on installation, configuration, operation and main-
tenance of the safety monitor.
Electrical installation is to be performed by trained expert personnel. During
installation care must be taken that supply and signal leads and also the
AS-Interface bus cable are laid separately from power cables. In the switchgear
cabinet it must be ensured that appropriate spark-quenching equipment is used
with contactors. Where drive motors and brakes are used, attention must be
paid to the installation instructions in the corresponding operating instructions.
Please note that the maximum line length of the AS-Interface bus cable is 100m.
Cables above that length require the use of an AS-Interface repeater.
Always read the full description of the configuration software and the
technical description of the safety monitor.
These descriptions are available for example on the CD with the confi-
guration software (Order No.: 3RK1802-2FB06-0GA0).
Important!
It is essential to adhere to the prescribed fusing; this is the only
way of guaranteeing safe disconnection in the event of a fault.
DANGER
Hazardous voltage.
Will cause death or serious injury.
Disconnect power before working
on equipment.
IMPORTANT NOTICE
Application
PFD value
ON period
Total duration
of operation
PFD
3 / 6 / 9
Months
10 / 10 / 10
Years
≤
4 x10
-5
/ ≤
6 x 10
-5
/ ≤
9 x 10
-5
Functions and instructions for connection
Information on electrical installation
!
Dimension drawing
Important!
Technical data
Electrical data
Permissible ambient temperature T
u
Operation/storage
–
20 to +60 °C /
–
30 to +70 °C
Rated operational voltage L+
24 V DC; +/
–
15 %
Residual ripple
<15 %
Rated operational current (L+)
Type 1: 150 mA / type 2: 200 mA
Current input AS-Interface
<45 mA
Response time
...-0CA0/...-2CA0
<40 ms
Response time
...-1CA0/...-3CA0
<50 ms
On delay (power ON)
<10 s
AS-Interface address
(via configuration)
none or 1 to 31
Slave profile (also applies to
simulated slaves)
7 F (ID1, ID2 not used)
Configuration interface
RS 232
9.6 kilobaud, no parity, 1 start bit, 1 stop
bit and 8 data bits
Connecting leads
3RK1901-5AA00
Inputs
"Start"
Optocoupler input, high active,
I approx. 10 mA at 24 V DC
"Contactor control (EDM)"
Optocoupler input, high active,
I approx. 10 mA at 24 V DC
Outputs
"Safety on" signaling output
Safety output
PNP transistor output, 200 mA
Floating NO contacts
Max. contact load:
1 A DC-13 at 24 V DC
3 A AC-15 at 230 V AC
Fusing
External with max. 4 A MT
Degree of protection
IP20
Shock resistance
15g / 11 ms
Vibration load
5 to 500 Hz (5 to 26 Hz, 0.75 mm
amplitude; 26 to 500 Hz, 2g)
Weight
approx. 390 g
45
7,2
68
,2
91
,5
37
x1
18
37
x1
39
115
94
65
5
28,8
82
,6
10
5,
9
6
10
2