Specifications

Control Valves - SMARTLINK
®
MRV
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combustion systems for industry
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Table 5: SMARTLINK
®
MRV Control Interface Field Wiring Specifications
Table 5: SMARTLINK
®
MRV Control Interface Field Wiring Specifications
(For applications with optional MAXON MRV Interface Panel or optional MRV Relay Input, Relay Output, and Network Interface Modules)
Connector Name / Terminal Name
(Label Abbreviation)
Wiring Specifications
(Maximum Length, Type, Min/Max Size and special requirements)
24V / Data Connector
Field 24VDC Power (F24+)
Field Common (F24-)
Data A (DA)
Data B (DB)
100 feet maximum length to each actuator; EIA Level 4 cable, 2 twisted pair with shield, 22 AWG
Cable sources:
MAXON - P/N 59829 (available in 100 and 500 ft. lengths)
Connect-Air International P/N W22P-1005
Suggested wiring color code convention:
Orange/White (F24+), Orange (F24-), Blue (DA), Blue/White (DB)
300 feet maximum length to each actuator with Belden P/N 3086A: 2 twisted pair with shield; 16 AWG - power pair, 20 AWG
- data pair
Suggested wiring color code convention: Brown (F24), Blue (FCOM), White (DA), Black (DB)
Note on shield wire terminations:
The shield wire of each actuator network cable should be connected to the actuator "SHD" terminal (keeping the shield
length to 1 inch or less). In addition, the shield wire should be tied to ground as it enters the enclosure of the Control Inter-
face (keeping the maximum length to 2 inches or less).
Supply 24VDC (S24+)
Supply Common (S24-)
14-18 AWG
No length limitations other than voltage drop considerations
+24VDC with 2, 3, & 4 Valve systems require 2.2, 3.3, and 4.3 DC Amps (max), respectively
4-20 mA Connector
4-20 mA In A+ (INA+)
4-20 mA In A- (INA-)
1000 feet maximum length
Use Belden 9535, 2-conductor, 100% shield coverage, 300V 80C (UL 2464, CSA PCC FT 4) or equivalent
Notes on shield wire termination: The shield wire should be grounded immediately as it enters the enclosure that houses
the Control Interface.
4-20 mA In B+ (INB+)
4-20 mA In B- (INB-)
Terminal INB+ and INB- for future use
4-20 mA Out+ (OUT+)
4-20 mA Out- (OUT-)
1000 feet maximum length
Use Belden 9535, 2-conductor, 100% shield coverage, 300V 80C (UL 2464, CSA PCC FT 4) or equivalent
Notes on shield wire termination: The shield wire should be terminated at the process controller end only, not within the
enclosure housing the Control Interface.
Relay Input Connector
Relay In 1 (RI1)
Relay In 2 (RI2)
Relay In 3 (RI3)
Relay In 4 (RI4)
Relay In 5 (RI5)
Relay In 6 (RI6)
14-22 AWG wire
No length restrictions other than voltage drop considerations (5-24VDC, 2 mA max)
Follow all local required wiring codes
RI5 and RI6 for future use
Relay Output Connector
Relay Out 1 (RO1)
Relay Out 2 (RO2)
Relay Out 3 (RO3)
Relay Out 4 (RO4)
Relay Out 5 (RO5)
Relay Common (RCOM)
14-22 AWG wire
No length restrictions other than voltage drop considerations (30VDC, 100 mA max)
Follow all local required wiring codes