Safety
7
2.2
Proper use
●
The electronic drive unit TC 110 PB operates designated Pfeiffer Vacuum turbopumps
and their accessories in a bus system Profibus-DP.
2.3
Improper use
Improper use will cause all claims for liability and warranties to be forfeited. Improper use
is defined as usage for purposes deviating from those mentioned above, especially:
●
use of accessories or spare parts, which are not named in this manual
●
operation of the devices in areas with ionizing radiation
2.4
Functional safety
The drive unit (electronic drive unit) TC 110 PB performs the safety function "Safe Limit-
ed Speed" according to EN 61800-5-2. In case of excess rotation speed the commutation
of the pump motor is switched off and the drive transferred into the safe condition.
Summary of characteristic data for use in safety-relevant applications:
●
During the expected device life span of up to 20 years no proof test is required.
●
If the user calculates his safety application with the specified values for 20 years, the
safety control system must be taken out of operation after 20 years and returned to
the manufacturer. A proof test cannot be accomplished by the user.
NOTICE
EC conformity
The manufacturer's declaration of conformity becomes invalid if the operator modifies
the original product or installs additional components.
Following installation into a plant and before commissioning, the operator must check
the entire system for compliance with the valid EU directives and reassess it accord-
ingly.
warranty seal
Closure seal
The product is sealed at the factory. Damaging or removal of a closure seal leads to the
loss of liability and warranty entitlements.
Do not open the product within its warranty period!
For process-related shorter maintenance intervals please contact the Pfeiffer Vacu-
um Service.
Characteristics according to IEC 61508 and IEC 62061
Characteristic Safety Integrity Level
PFH
PFD
av
Proof Test Interval T
Value
SIL CL 2
4.2 * 10
-9
/ h
3.7 * 10
-4
20 a
Characteristics according to EN ISO 13849-1
Characteristic Performance Level
Category MTTF
d
Average Diagnostic Coverage DC
Value
PL d
Cat. 3
high (134 a)
medium (90 % - <99 %)
