USB-6525 User Guide and Specifications 14 ni.com
Specifications
The following specifications are typical at 25 °C, unless otherwise noted.
Isolated Inputs
Number of input channels.......................8, ch-ch isolated
Input voltage range .................................–60 VDC to 60 VDC
Input current ...........................................3.0 mA/channel max
Minimum pulse-width
for change detection................................200 μs
Propagation delay ...................................65 μs, typical
Solid-State Relay Outputs
Number of output channels.....................8, ch-ch isolated
Relay type ...............................................Normally open solid-state
relay (SSR)
Switching voltage ...................................60 VDC/30 V
rms
max
Switching current (per channel)..............500 mA max, full operation
temperature range
Switching rate (90% duty cycle) ............5 operations per second
Relay open time ......................................60 μs typ
Relay close time......................................1.2 ms typ
On resistance...........................................550 mΩ max
Off state leakage .....................................0.6 μA typ
Counter
Number of counters ................................1 (P1.7 can be configured
as a counter)
Level Min Max
Input low voltage –60 VDC 1 VDC
Input high voltage 3.2 VDC 60 VDC
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