Input Characteristics
Maximum switching voltage
Channel-to-channel
150 V
Channel-to-ground
150 V, CAT I
Caution
This module is rated for Measurement Category I. It is intended to carry
signal voltages no greater than 100 Vrms, 150 Vpk, or 150 VDC. This module can
withstand up to 800 V impulse voltage. Do not use this module for connection to
signals or for measurements within Categories II, III, or IV. Do not connect to
MAINS supply circuits (for example, wall outlets) of 115 VAC or 230 VAC.
1
Caution
When hazardous voltages (>42.4 Vpk/60 V DC) are present on any
channel, safety low-voltage (≤42.4 Vpk/60 V DC) cannot be connected to any other
channel.
Caution
The switching power is limited by the maximum switching current and
the maximum voltage and must not exceed 60 W, 62.5 VA.
Maximum switching power (per channel)
60 W, 62.5 VA (DC to 60 Hz)
Maximum current (switching or carry, per
channel)
2 A
Simultaneous channels at maximum
current (≤55 °C)
31
Minimum switch load
20 mV/10 mA
Note
Switching inductive loads (for example, motors and solenoids) can produce
high voltage transients in excess of the module’s rated voltage. Without additional
protection, these transients can interfere with module operation and impact relay life.
For more information about transient suppression, visit
and enter the
Info Code
relayflyback
.
DC path resistance
Initial
<0.15 Ω
End of life
>1.0 Ω
1
Measurement Categories CAT I and CAT O are equivalent. These test and measurement circuits are
not intended for direct connection to the MAINS building installations of Measurement Categories
CAT II, CAT III, or CAT IV.
2
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NI PXI-2568 Specifications