NI PXI-2527 Specifications
32 × 1 Relay Multiplexer
This document lists specifications for the NI PXI-2527
32 × 1 multiplexer relay module. All specifications are subject
to change without notice. Visit
ni.com/manuals
for the most
current specifications.
Topologies ...................................... 1-wire 64 × 1 multiplexer,
1-wire dual 32 × 1
multiplexer,
2-wire 32 × 1
multiplexer,
2-wire dual 16 × 1
multiplexer,
4-wire 16 × 1 multiplexer
Refer to the
NI Switches Help
for detailed topology and
pinout information.
Input Characteristics
All input characteristics are DC, AC
rms
, or a combination
unless otherwise specified.
Maximum switching voltage
Channel-to-channel .................... 300 V
Channel-to-ground...................... 300 V, CAT I
Caution
This module is rated for Measurement
Category I and is intended to carry signal voltages
no greater than 300 V. This module can withstand up
to 1,500 V impulse voltage. Do
not
use this module
for connections to signals or for measurements
within Measurement Categories II, III, or IV.
Caution
Do
not
connect to MAINs supply circuits
(e.g., wall outlets) of 115 or 230 VAC. Refer to the
Read Me First: Safety and Radio-Frequency
Interference
document for more information about
Measurement Categories.
Caution
When hazardous voltages
(>42.4 V
pk
/60 VDC) are present on any relay
terminal, safety low-voltage (
≤
42.4 V
pk
/60 VDC)
cannot be connected to any other relay terminal.
Caution
The maximum switching power is limited
by the maximum switching current, the maximum
voltage, and must not exceed 60 W, 62.5 VA.
Maximum switching power (per channel)
AC systems .................................60 W, 62.5 VA
(up to 60 Hz)
DC systems .................................Refer to Figure 1
Figure 1.
Maximum Switching Power for DC Loads (per channel)
Maximum total current....................2 A
(switching or carry)
DC path resistance
Initial ...........................................<1
Ω
End-of-life
...................................≥
2
Ω
DC path resistance typically remains low for the life of the
relay. At the end of relay life, the path resistance rapidly rises
above 1
Ω
. Load ratings apply to relays used within the
specification before the end of relay life.
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0.00
0.50
1.00
1.50
2.00
2.50
0
50
100 150 200 250 300 350
Voltage (V)
Current (A)
