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.
10-30.7-49
E-i -3/14
50120624-001/
Electrical Installation
The MRV Interface Panel includes a Universal Power Supply, Relay Input Interface, Relay Output Interface and Network
Interface module. (The 24” x 20” Interface Panel also includes a User Display.) These DIN rail-mounted devices are factory-wired
to the SMARTLINK
®
MRV Control Interface and a labeled terminal block assembly for field wiring as shown in the wiring diagram
below. A “typical” electrical schematic of a SMARTLINK
®
MRV system is also provided as a representative example of how the
system is interfaced to a temperature controller and flame safety device.
To ensure the burner can be shut down in the event of a SMARTLINK
®
MRV failure, the commissioning engineer must verify
specific output connections to the burner management equipment or automatic burner controls. Reference the following electrical
wiring information for fail-safe system operation: a) Example Wiring Diagram: Lines 103 and 104 (page 10-30.7-50), b) Table 1,
Interface Panel Terminal Descriptions: CE1/CE1R, CE2/CE2R and CO1/CO1R, c) Table 4, Control Interface Terminal
Descriptions: RO2 and RO5 and d) SMARTLINK
®
MRV Safety Requirements #5 and #6 (page 10-30.7-43).
Electrical wiring should be performed in accordance with all local and NEC 1 codes. See Reference Table 1 and Table 2 (pages
10-30.7-69 and 10-30.7-70) for terminal descriptions of the MRV Interface Panel and Valve Actuator. Reference Table 3 (page 10-
30.7-71) summarizes the maximum length, type, and size of all field wiring required for the MRV Interface Panel.
The AC power (mains) wiring must be permanently installed and not supplied as a detachable line cord.
If the Control Interface is purchased without a factory-wired Interface Panel, see Reference Tables 4 through 9 (10-30.7-72
through -77) for terminal descriptions of the individual SMARTLINK
®
MRV electronic components: Control Interface, Relay Input
Interface, Relay Output Interface, Network Interface and User Display.
SMARTLINK
®
MICRO-RATIO
®
Valve (MRV) Interface Panel Block Diagram
Purge Position
Command
Relay
Command
Termin als
Lightoff Position
Command
Modulate Valves
Command
Remote Reset
Command
Custom Application
Command #1
Custom Application
Command #2
Command
Common
(Firing Rate Feedback)
(Reserved for Future Use)
(Firing Rate Command)
4-20 mA Inputs &
Output Terminals
120/230 VAC
Neutral
Protective Earth
120/230 VAC Power
Input Terminals
Circuit
Breaker
24VDC
Power
Supply
SMARTLINK
Relay Input
Interface
(RII)
SMARTLINK
MRV
Control
Interface
(CI)
SMARTLINK
Relay Output
Interface
(ROI)
Alarm
Control Enable #1
Control Enable #2
Purge Position
Proven
Lightoff Position
Proven
Custom Output #1
Relay
Output
(Form A)
Terminals
SMARTLINK
Network
Interface
(NI)
Network & Power
Connectors for
Actuators and
Displays
SMARTLINK
User Display
(Not included with
20”x16” MRV
Interface Panel)