© National Instruments Corporation
A-1
ER-8/16 User Manual
Appendix A
Specifications
This appendix lists the specifications for the ER-8/16. These specifications are typical at 25
°
C and 50% humidity
unless otherwise noted.
Channel Rating
Number of channels ................................................................8 channels for ER-8
16 channels for ER-16
Relay type................................................................................SPDT (1 Form C), nonlatching
Max switching capacity (resistive load)
1
AC........................................................................................3 A at 250 VAC
DC........................................................................................3 A at 30 VDC
Max working voltage ..............................................................250 Vrms (channel to ground)
250 Vrms (channel to channel, same phase)
Switching current ....................................................................3 A max per channel
40 A max for ER-16, all channels
24 A max for ER-8, all channels
Channel on resistance..............................................................100 m
Ω
Contact material ......................................................................Silver-nickel alloy
Life
2
Mechanical ..........................................................................10,000,000 operations min
Electrical .............................................................................100,000 at rated load
Isolation
Complies with IEC 1010 for Voltage Installation Category II Pollution Degree 2
Operate time............................................................................10 ms
Release time ............................................................................5 ms
Power Requirement
External Supply
Voltage ....................................................................................+5 V (
±
5%)
Current ....................................................................................0.5 A for 8 channels
1.0 A for 16 channels
1.5 A for 24 channels
2.0 A for 32 channels
1
If you operate at high currents, later operation at low currents may not be possible.
2
Relays are subject to normal wear based on the number of operations.