schmersal PSC1 Series Installation Manual page 85

Installation manual
Output PSC1 Actuator /
external
shutdown
circuit
Dual-channel Dual-channel
without Contactor, valve,
dynamic brake etc. with
output test direct feedback
Q0/Q1, Q2/Q3 for diagnostics in
at least one
2 x IQQ00 channel
..IQQ09 or
Actuator with
safety function
cat. 4 (e.g. STO)
Dual-channel Dual-channel
Q0/Q1, Q2/Q3 Contactor, valve,
brake etc. with
or direct feedback
for diagnostics in
Dual-channel both channels
with dynamic or
output test Actuator with
Q0_P and safety function
Q1_N, cat. 4 (e.g. STO)
Q2_P and
Q3_N
2 x IQQ00
..IQQ09
Note:
When using PSC1-E-33 module please observe note in section 5.6.5.
PSC1-C-10 Installation manual V2.7
Version: 57E
Category DC
according
to EN ISO
13849-1
Cat. 3 90% Monitori
ng in
both
external
shutdow
n circuits
Cat. 4 99% Monitori
ng in
both
external
shutdow
n circuits
MTTF Achieva Boundary condition
d
actuato ble PL
r accordi
ng to EN
ISO
13849-1
Medium d Contactor and
or high downstream actuators
suitably designed for
safety application
Monitoring
electromechanical
components by means of
positively driven switches,
position monitoring on
switching valves etc.
Outputs IQQ0...19 1 x from
different groups (groups of
6/4 contiguous IQQ ports,
e.g. IQQ0...5, IQQ6...9)
or
Operation delayed at PLC
level
High e Contactor and
downstream actuators
suitably designed for
safety application
Monitoring
electromechanical
components by means of
positively driven switches,
position monitoring on
switching valves etc.
For applications with
frequent demand for the
safety shutdown, testing
should be at short
intervals, e.g. at the start
of the shift, 1 x per week.
However, a test should be
undertaken cyclically at
least 1 x per year.
Fault
exclusion
Short-circuit
on external
operation
Short-circuit
on external
operation in
both channels
Page 85 of 174