CFP-RLY-421

Relay Modules for Compact FieldPoint NI cFP-RLY-421, NI cFP-RLY-423 • 4 or 8 electromechanical relays • 8 form A (SPST), RLY-421 • 4 form C (SPDT), RLY-423 • Switch 250 VAC, 120 VDC • Switch 1.5 A, maximum • 2,300 Vrms bank isolation for transient overvoltage protection • Hot swappable with autoconfiguration • -40 to 55 °C operating range (cFP-RLY-421) • -40 to 60 °C operating range (cFP-RLY-423) NEW Module cFP-RLY-421 cFP-RLY-423 Output Channels 8 4 Maximum Output Types 120 VDC, 250 VAC 120 VDC, 250 VAC Output Current Rating (See Specifications) 1.5 A 1.5 A Separate Ground Plane per Channel ✓ ✓ Isolation The cFP-RLY-42x modules feature optical bank isolation with 2,300 Vrms of breakdown isolation. In addition, the modules provide double insulation for up to 250 Vrms of operational isolation. Compact FieldPoint can safely be used in applications where hazardous voltages are present with the cFP-CB-1 connector block. These Compact FieldPoint modules do not have channel-to-channel isolation. Overview The National Instruments cFP-RLY-42x devices are versatile relay modules for Compact FieldPoint that can be used to control digital signals ranging from low voltage to 120 VDC and to 250 VAC. These modules are commonly used to control indicator lights, motors, and power circuits. All the modules include onboard diagnostics to ensure trouble-free installation and maintenance. Similar relay modules are available for FieldPoint, see page 572 for more information. Power Requirements Because the cFP-RLY-42x are high power consumption modules, they could limit the number of I/O modules that you can connect to a single network interface module. Controllers and network interface modules supply up to 9 W to power I/O modules. The RLY-421 requires up to 2.5 W and the RLY-423 requires up to 1.5 W. Relay Modules NI cFP-RLY-42x modules provide built-in module-to-module isolation to protect your Compact FieldPoint system and controller from high voltage levels. Each channel on the RLY-42x uses electrically isolated output relays so that each relay output has a separate ground plane and each channel can be used with a different voltage potential. Thus, you can connect one channel to a 24 VDC and another channel on the same module to a 250 VAC. All the channels on the relay modules feature LEDs that indicates the output state of each channel. The modules all feature a maximum switching frequency of 10 Hz (20 operations). Overall data throughput depends on software loop speeds and network speeds. Field I/O Connections Each input channel on the cFP-RLY-421 has two terminals: 1. Relay common terminal (IC) 2. Normally open terminal (NO) Each channel of the cFP-RLY-423 has three terminals: 1. Normally open terminal (NO) 2. Normally closed terminal (NC) 3. Relay common terminal (IC) Relay Modules for Compact FieldPoint V C VSUP NO IC COM To next channel cFP-RLY-421 V C NO IC IC NC VSUP COM – Load Sourcing Load + or Ordering Information AC – NI cFP-RLY-421 ..........................................................777318-421 NI cFP-RLY-423 ..........................................................777318-423 Recommended Compact FieldPoint System Products + NI cFP-2020 ..............................................................777317-2020 NI cFP-BP-4 ..................................................................778617-04 NI cFP-CB-1 ..................................................................778618-01 NI PS-5 Power Supply ..................................................778805-90 NI Developer Suite Professional Control Edition..........777906-03 BUY ONLINE! Load Visit ni.com/info and enter cfprly421, and/or cfprly423. cFP-RLY-423 Figure 1. Wiring Schematics for RLY Modules Specifications Typical for –40 to 60 °C unless otherwise noted. Relay Characteristics Number of channels cFP-RLY-421 ............................................... cFP-RLY-423 ............................................... Relay type cFP-RLY-421 ............................................... cFP-RLY-423 ............................................... Maximum switching capacity (resistive load) AC ............................................................ DC ............................................................ (cFP-RLY-421) ............................................. (cFP-RLY-423) ............................................. 8 4 SPST, normally open, nonlatching SPDT, nonlatching 1.5 A at 250 VAC 1.5 A at 0–35 VDC 1.5 A at 40 VDC 1 A at 55 VDC 0.4 A at 120 VDC 10 mA at 5 VDC (120 VDC/250 VAC) 0.12 µA 8 µA 100 mΩ or ........................................ Dimensions (including terminal base).............. Weight cFP-RLY-421 ............................................... cFP-RLY-423 ............................................... Indicates on/off state of each contact 10.9 by 10.9 by 9.1 cm (4.3 by 4.3 by 3.6 in.) 136 g (4.8 oz) 156 g (5.5 oz) Isolation Voltage Maximum isolation voltage ............................. 250 Vrms, Installation Category II Channel-to-channel isolation ........................... No isolation between channels Transient overvoltage....................................... 2,300 Vrms Environmental FieldPoint modules are intended for indoor use only. For outdoor use, they must be mounted inside a sealed enclosure. Operating temperature..................................... -40 to 60 °C Storage temperature ........................................ -55 to 85 °C Relative humidity ............................................. 10 to 90%, noncondensing Maximum altitude ............................................ 2,000 m; at higher altitudes the isolation voltage ratings must be lowered. Pollution Degree............................................... 2 Minimum switching load ................................. Off-state leakage current................................. DC ............................................................ 50/60 Hz .................................................... On resistance (typical)...................................... Expected relay life Mechanical ................................................ 2 x 107 operations/s (cFP-RLY-421) 1 x 107 operations/s (cFP-RLY-423) Electrical (at 30 cpm)................................. 300,000 operations at 1.5 A, 35 VDC 100,000 operations at 1.5 A, 250 VAC Operate time cFP-RLY-421 ...............................................