Specifications

Control Valves - SMARTLINK
®
MRV
www.maxoncorp.com
combustion systems for industry
Maxon reserves the right to alter specifications and data without prior notice.
© 2014 Copyright Maxon Corporation. All rights reserved.
10-30.7-48
E - i - 3/14
50120624-001/
Electrical Installation
The SMARTLINK
®
MRV System block diagram below indicates the sources and destinations of all electrical wiring. If the Control
Interface is ordered with an Interface Panel assembly, the following field wiring is required:
• 120/230 VAC supply and protective earth wiring between the customer’s fused, AC power source and Interface Panel
terminal block (L1, L2, and PE).
• Low voltage 4-20 mA firing rate command and feedback signal wiring between the user’s process controller and Interface
Panel terminal block (INA+, INA-, OUT+, and OUT-). The shield wire for the firing rate command (INA+ and INA-) should be
grounded immediately as it enters the enclosure that houses the MRV Interface Panel. If the Interface Panel is purchased
with the enclosure option, terminate the shield wire on the corner ground post closest to where the cable enters. The shield
wire for the 4-20 mA firing rate feedback (OUT+, OUT-) should be terminated only at the process or temperature controller end.
• Input Command Relay wiring between the customer’s burner management or flame safety device and the Interface Panel
terminal block (PPC, LPC, MVC, RRC, and CCOM). The ground reference (CCOM) must be wired for any of the input
command signals to function.
• Output Relay wiring between the customer’s burner management or flame safety system and the Interface Panel terminal
block (ALM/ALMR, CE2/CE1R, PPP/PPPR, and LPP/LPPR).
• Communications Network wiring between each SMARTLINK
®
Valve Actuator (+24, GND, DA, DB, SHD) and the 4-terminal
connectors (F24+, F24-, DA, DB) of the Network Interface. The shield wire of each network cable should be connected to the
actuator “SHD” terminal (keeping the shield length to 1 inch or less). The shield wire should also be tied to ground as it enters
the enclosure of the MRV Interface Panel (keeping the maximum length to 6 inches or less). If the Interface Panel is
purchased with the enclosure option, terminate the shield wire on the corner ground post closest to where the cable enters
the enclosure.
MAXON SMARTLINK
®
MICRO-RATIO Valve (MRV)
System Block Diagram
AC Power
To/From Us ers’s
Burner Management
To/From Us er’s
Process Controller
Firing Rate
Firing Rate Feedback
SMARTLINK
Relay Input
Interface
(RI1)
SMARTLINK
Relay Output
Interface
(RO1)
Circuit
Breaker
24VDC
Power
Supply
SMARTLINK
Local User
Display
SMARTLINK
MRV
Control
Interface
(CI)
SMARTLINK
Network
Interface
(NI)
SMARTLINK
Valve Actuator #0
SMARTLINK
Valve Actuator #1
SMARTLINK
Valve Actuator #2
SMARTLINK
Valve Actuator #3
SMARTLINK
User Display
SMARTLINK
Future Field Device
4-20 mA Terminal Block
I/O Terminal Blocks
VAC Terminals
Notes:
1. Non-shaded blocks indicate optional MAXON-supplied equipment
2. Shaded blocks indicate SMARTLINK
®
MRV required components