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401-400 Series Single Channel Receiver

Overview  

The 401-400 provides the most complete system testing package available for monitoring two/wire， on/off level transmitters. The receiver is based on reliable technology that’s performed successfully at major plants for decades. The two-wire design allows for continuous self-checking loop diagnostics， which check the twister pair for open and short circuits.  

• Two wire technology

• Continuous level simulation

• Proven technology

• Verify ™ loop diagnostics

Power Requirement：
95-145 Vac， 50/60Hz， 5 watts
215-265 Vac， 50/60Hz， 5 watts maximum

Power Consumption
Less than 7 watts

Surge Protection
10 Amp Standard  

Outputs：
Alarm： DPDT relay contact
Fault： DPDT relay contact

Contact Rating：
120 Vac： 5A non-inductive / 3A inductive
230 Vac： 5A non-inductive / 2A inductive
Min Rating   100mA/ 12 VDC

LED Indication：
Green： Normal when lit (14-20mA)
 Alarm when out (4-10mA)
Yellow：  Fault/Malfunction when lit.
 Normal when out.
LEDs are visible through standard Nema 4X housing or optional viewport on explosion-proof housing.

AutoVerify Test Interval：
10 seconds (alarm inhibit 3 seconds)

AutoVerify Inputs
One magnetic key to manually certify entire system operation

Ambient Temperature：
-40°F to 145°F (-40°C to 60°C)

AutoVerify Alarm Latency：
4 seconds maximum (time from AutoVerify test to acknowledgement of a real alarm condition.)

Area Classification：
401-0400 Series receivers are designedfor Non-Hazardous installation.

Connections to hazardous locations：
401-04XX-00X output is limited to 24 volts， current will supply one (1) 4-20mA transmitter
401-04XX-01X output is Intrinsically Safe for Class I， II， III， Div. 1 & 2， Groups A through G.
Intrinsic Safety is provided by STAHL Barrier model 9001/01-280-100-10.

Housing：   
Nema 1-4X， 5， and 12 (standard)  Explosion-proof (optional)
Nema 1 General Purpose Explosion-proof for Class 1， Groups A， B， C， D， and Class II， Groups E， F， G， Division 1 or 2.
Nema 2 Drip Tight
Nema 3 Weather Resistant 
Nema 4 Waterproof
Nema 5 Dust Tight

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