Digital Input Modules for Compact FieldPoint
NI cFP-DI-300, NI cFP-DI-301,
NI cFP-DI-304, NI cFP-DI-330
• 8-,16-, or 32-channel inputs
• 24 VDC inputs
• 4 to 250 VDC inputs
• 15 to 250 VAC inputs (50/60 Hz AC)
• 3 to 250 VAC inputs (1 kHz AC)
• 2,300 Vrms bank isolation for transient
overvoltage protection
• Hot-swappable with autoconfiguration
• -40 to 70 °C operating range
Separate Ground
Plane per Channel
All Channel
Update Rate1
Additional
Features
Module
Input Channels
Input Ranges
Input Type
Compatibility Examples
cFP-DI-300
cFP-DI-301
cFP-DI-304
cFP-DI-330
8
16
32
8
18 to 30 VDC
18 to 30 VDC
10 to 30 VDC
5 to 48 VDC
5 to 250 VAC
Sinking
Sinking
Sinking
24 VDC sourcing devices
24 VDC sourcing devices
24 VDC sourcing devices
TTL, CMOS, 12 VDC, 24 VDC,
48 VDC, 120/240 VAC/VDC
–
–
–
1 kHz
1 kHz
1 kHz
1 kHz
–
–
Hysteresis
Input current limiting
(1.5 mA)
Sinking or sourcing
ꢀ
1The all-channel update rate refers to the time the module takes to sample all channels. The overall system update rate is affected by other factors, such as the aggregate module update rate and
software loop rate. To calculate the system update rate, visit ni.com/info and enter “systemrate.”
Each channel on the cFP-DI-330 includes circuitry that limits the total
Overview
current to 1.5 mA to prevent damaging the module. All channels on the
National Instruments cFP-DI-3xx devices are versatile digital input
cFP-DI-3xx modules feature LEDs that indicate the input state of each
modules available for Compact FieldPoint systems. You can use these
channel. The modules include an all-channel update rate of 1 kHz. Overall
modules to monitor digital signals ranging from low-voltage levels up to
data throughput depends on software loop speeds and network speeds.
250 V. They are commonly used to monitor proximity and limit switches,
pushbutton switches, thermostat outputs, relay closures, power circuits, Isolation
and TTL devices. All the modules include onboard diagnostics to ensure
The cFP-DI-3xx modules feature bank isolation with 2,300 Vrms of
trouble-free installation and maintenance.
breakdown isolation. In addition, the cFP-DI-330 provides double insulation
for up to 250 Vrms of operational isolation. You can safely use Compact
Digital Input Modules
The cFP-DI-3xx modules provide built-in module-to-module isolation to
FieldPoint with the cFP-CB-1 connector block in applications where
hazardous voltages are present. These Compact FieldPoint modules do
protect your Compact FieldPoint system and controller or communication
not have channel-to-channel isolation.
interface from high voltage levels. The cFP-DI-300, cFP-DI-301, and
cFP-DI-304 modules use a common ground plane for all the input
Field I/O Connections
channels. Each channel on the cFP-DI-300, cFP-DI-301, and cFP-DI-304
Compact FieldPoint modules include a built-in power distribution bus
modules includes current-limiting circuitry to prevent module damage
that provides multiple power connections on the module. A field-wired
when connected directly to a 24 VDC source. The cFP-DI-330 uses eight
power supply connected to the voltage (V) and common (C) terminals is
optically isolated input channels so that each digital input has a separate
internally connected to a power distribution bus that delivers additional
ground plane, and you can use each channel with a different voltage
breakout terminals for voltage supply (VSUP) and common (COM). These
potential. Thus, you can connect one channel to a 5 VDC TTL signal and
terminals offer a convenient way to distribute power to field devices
another signal on the same cFP-DI-330 module to a 250 VAC line voltage.
that require external power.