user manual

© National Instruments Corp. 11 cFP-RLY-421
Specifications
The following specifications are typical for a range of –40 to 60 °C
unless otherwise noted.
Relay Characteristics
Number of channels .......................... 8
Relay type ......................................... 1 SPST, nonlatching
Maximum switching capacity (resistive load)
–40 to 60 °C
AC ........................................ 1.5 A at 250 VAC
DC........................................ 1.5 A at 0 to 35 VDC
1 A at 55 VDC
0.4 A at 120 VDC
Minimum switching load.................. 10 mA at 5 VDC
On resistance..................................... 100 mΩ
Off-state leakage (120 VDC/250 VAC)
Expected life
Mechanical ................................. 20
× 10
6
operations min
Electrical (at 30 cpm) ................. 300,000 operations at 1.5 A,
35 VDC;
100,000 operations at 1.5 A,
250 VAC
Maximum switching frequency
Mechanical ................................. 20 operations per second
Electrical..................................... 1 operation per second at
maximum load
Relays operate time........................... 6 ms typical, 8 ms max
Relays release time ........................... 3 ms typical, 4 ms max
Relay bounce time ............................ 3 ms max
Contact material................................ Gold-plated silver cadmium
oxide
Frequency Off-State Leakage
DC 0.12 µA
50/60 Hz 8 µA