Portable, Modular Signal Conditioning Modules
SCC-DO01 Optically Isolated Digital Output
NI SCC-RLY01 SPDT Relay
Model
Channel
Description
Part Number
Model
Channel
Description
Part Number
SCC-DO01
1
Isolated digital output
777459-12
SCC-RLY01
1
SPDT relay
777459-34
The National Instruments SCC-DO01 is a single-channel, optically
isolated digital output module for switching external devices. The
NI SCC-DO01 optical isolation circuitry handles up to 24 VDC and
includes a status LED for visual verification of the module output status.
The National Instruments SCC-RLY01 is a single-channel relay module
for switching external devices. It contains one single-pole, double-throw
(SPDT) relay capable of switching 5 A at 30 VDC or 250 VAC when used
with the SCC-±8 and 5 A at 30 VDC or 30 VAC when used with the
The SCC-DO01 includes an external switch with which you can configure SC-2345. The NI SCC-RLY01 uses positive logic. A digital high sets the
the power-up state of the module either high or low.
relay, and a digital low resets it.
The SCC-DO01 plugs into any SC-2345 socket between J9 and J1±.
The SCC-RLY01 plugs into any SC-2345 socket between J9 and J1±.
When you install the module in one of these sockets, the digital signal is When inserting an SCC-RLY01, a DIO line of the multifunction DAQ
controlled by a DIO line of the multifunction DAQ device. For example,
socket J9 connects to digital line 0 of the DAQ device. Because you can
device controls the digital signal. For example, socket J9 connects to
digital line 0 of the data acquisition device. Because you can configure
configure DAQ devices for input or output on a line-by-line basis, you can the DAQ devices for input or output on a line-by-line basis, you can have
have from one to eight SCC-DO01 modules per carrier.
from one to eight SCC-RLY01 modules per carrier.
Specifications
Specifications
SCC-DO01
SCC-RLY01
Number of channels............................
Nominal switching capacity ............... 5 A at 250 VAC1, 5 A at 30 VDC
Contact resistance .............................. 30 mΩ
Switching time
1
Output Characteristics
Number of channels............................
Compatibility....................................... TTL-compatible
Supply voltage range.......................... 5 to 24 VDC
1
Operate time (NC to NO)................ 5 ms (10 ms max)
Release time (NO to NC)................ 4 ms (5 ms max)
Maximum speed ................................. 30 operations/s at rated load
Contact lifetime .................................. 5 x 107 operations at 180
operations/minute (minimum)
Digital Logic Levels
Configuration 1
Output Voltage Level
between Vout and Vcom
Logic Level
Low (I01 = 0 mA)
High (I01 = 25 mA)
0 V
1The nominal switching voltage is 250 VAC when using a high-voltage backshell in an
NI SCC-±8 carrier. Otherwise the module is rated for only 30 VAC.
22 VDC at Vss = 24 V
3 VDC at Vss = 5 V
Configuration 2
Output Voltage Level
between Vout and Vcom
Logic Level
Low (I02 = 25 mA)
High (I02 = 0 mA)
0.4 V
Vss
Maximum continuous load current (Io)
Configuration 1............................... 8± mA
Configuration 2............................... 120 mA
Minimum load resistance (at Vss = 24 V)
RLOAD1 .......................................... 19± Ω
RLOAD2........................................... 184 Ω
Power Requirements
Digital.................................................. ±9 mW
BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.)
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