Specifications

Technical Specifications Appendix A
393
Relay Electrical Service Life
The typical performance data supplied by relay vendors is shown in Figure A-1. Actual
performance may vary depending upon your specific application.
An external protection circuit that is adapted to the load will enhance the service life of the
contacts.
100,000
10,000
1,000
100
10
Rated Operating Current (A)
230 VAC Inductive load according to
IEC 947--5--1 AC15 from 0A to 3A
24 VDC Inductive load according to
IEC947--5--1DC13from0Ato2A
Resistive 230 VAC load
Resistive 24 VDC load
01234567
4000
250 VAC resistive load
30 VDC resistive load
250 VAC inductive load (p.f.=0.4)
30 VDC inductive load (L/R=7ms)
Rated Operating Current (A)
Service life (x 10
3
operations)
1000
500
300
100
Service life (x 10
3
operations)
2A Rating
10A Rating
Figure A-1 Relay Electrical Service Life
Technical Specification s
All S7-200 CPUs and expansion modules conform to the technical specifications listed in
Table A-1.
Notice
When a mechanical contact turns on output power to the S7-200 CPU, or any digital expansion
module, it sends a “1” signal to the digital outputs for approximately 50 microseconds. You must
plan for this, especially if you are using devices which respond to short duration pulses.
Table A-1 Technical Specifications
Environmental Conditions — Transport and Storage
EN 60068--2--2, Test Bb, Dry heat and
EN 60068--2--1, Test Ab, Cold
-- 4 0 ° Cto+70° C
EN 60068--2--30, Test Db, Damp heat 25° Cto55° C, 95% humidity
EN 60068--2--14, Test Na, Temperature Shock -- 4 0 ° Cto+70° C dwell time 3 hours, 2 cycles
EN 60068--2--32, Free fall 0.3 m, 5 times, product packaging
Environmental Conditions — O perating
Ambient Temperature Range
(Inlet Air 25 mm below unit)
0° Cto55° C horizontal mounting, 0° Cto45° C vertical mounting
95% non-condensing humidity
Atmospheric pressure 1080 to 795 hPa (Corresponding to an altitude of --1000 to 2000 m)
Concentration of contaminants S0
2
: < 0.5 ppm; H
2
S: < 0.1 ppm; RH < 60% non-condensing
EN 60068--2--14, Test Nb, Temperature
change
5° Cto55° C, 3° C/minute
EN 60068--2--27 Mechanical shock 15 G, 11 ms pulse, 6 shocks in each of 3 axis
EN 60068--2--6 Sinusoidal vibration Panel mount: 0.30 mm from 10 to 57 Hz; 2 G from 57 to 150 Hz
DIN rail mount: 0.15 mm from 10 to 57 Hz; 1 G from 57 to 150 Hz
10 sweeps each axis, 1 octave/minute
EN 60529, IP20 Mechanical protection Protects against finger contact with high voltage as tested by standard probes.
External protection is required for dust, dirt, water, and foreign objects of < 12.5 mm in
diameter.