Nord Drivesystems SK 510P - Technical Data

NORDAC PRO (SK 500P) – STO/SS1
TI 80_0030 - 3219 7 / 7
5 Technical Data
Safe Pulse Block
SK 510P SK CU5-STO
Input voltage
+ 24 V
Voltage tolerance
± 25 % (18 V … 30 V)
Operation with OSSD
- 20 % … + 25 % (19,2 V … 30 V)
Current consumption
STO
≤ 150 mA
VIS1: t.b.d (≤ 20 mA)
VIS2: ≤ 180 mA
(Average value)
SS1
≤ 10 mA
≤ 10 mA
Peak current (peak, when
switching on or on the OSSD)
STO
≤ 750 mA
VIS1: ≤ 75 mA
VIS2: ≤ 750 mA
SS1
≤ 25 mA
≤ 25 mA
Cable length
≤ 100 m
Cable capacitance
≤ 20 nF per connected frequency inverter
(≤ 4 nF * t
OSSD
/ 0.1 ms with t
OSSD
max. 0.5 ms)
Switch-on delay
≤ 200 ms
Response time (the value in brackets
corresponds to a typical value)
STO
≤ 200 ms (t.b.d.)
≤ 200 ms (t.b.d)
SS1
≤ 10 ms (t.b.d.)
≤ 10 ms (t.b.d.)
Cycle time
≥ 1 s
Requirements for OSSDs
Test pulse width
≤ 500 µs
Duty (High level)
≥ 90 %
Time between double pulses ≥ 1 ms (observe the duty factor)
Safety integrity level
(as per IEC 61508)
STO
SIL 3
SIL 3
SS1
SIL 1
SIL 1
Probability of a hazardous failure
per hour
STO
PFH = t.b.d.
PFH = t.b.d.
SS1
PFH = t.b.d.
PFH = t.b.d.
Proportion of safe failures
STO
SFF = t.b.d. SFF = t.b.d.
SS1
SFF = t.b.d.
SFF = t.b.d.
Safety category
(as per EN ISO 13849-1)
STO
Category 4
Category 4
SS1
Category 1
Category 1
Performance Level
(as per EN ISO 13849-1)
STO
PL e
PL e
SS1
PL c PL c
Mean time until hazardous failure
STO
MTTF
d
= "High" (>100 years)
SS1
MTTF
d
= t.b.d.
Degree of diagnostic coverage
STO
DC = t.b.d.
DC = t.b.d.
SS1
DC = t.b.d.
DC = t.b.d.
Operational life
TM = 20 years