Specifications

ManualsBrandsMaxon ManualsCell PhoneMX-6880

Control Valves - SMARTLINK

MRV

www.maxoncorp.com

combustion systems for industry

Maxon reserves the right to alter specifications and data without prior notice.

10-30.7-69

E-i -3/14

50120624-001/

SMARTLINK

Reference Tables

Table 1: SMARTLINK

MRV Interface Panel Terminal Descriptions

Table 1: SMARTLINK

MRV Interface Panel Terminal Descriptions

Terminal Designator:

Name (Label Abbreviation)

Description

Line Voltage Terminals Location: Terminal block assembly on lower DIN-rail of Interface Panel

Line Voltage (L1)

100 to 230 VAC customer power source, 50-60 Hz

2 Valve System: 61 Watts (max) load

3 Valve System: 90 Watts (max) load

4 Valve System: 118 Watts (max) load

Line Voltage Switched (L1S)

Switched line voltage from breaker used to locally power down the SMARTLINK

MRV System.

Note: No field wires should be connected to these terminals.

Neutral (L2) Neutral

Protective Earth (PE) Earth Ground

Relay Output Terminal Block

Location: Terminal block assembly on lower DIN-rail of Interface Panel

All relay outputs below are Form A (Normally Open) contacts with the following specifications: 12A, 250 VAC/DC

(max)

Alarm (ALM)

Alarm Return (ALMR)

Output: Alarm relay contact closes if one or more MRV alarm or fault conditions exist. (See page 10-30.7-66 for

alarm / fault descriptions.)

Control Enable (CE1)

Control Enable Return (CE1R)

Control Enable (CE2)

Control Enable Return (CE2R)

Output: Control Enable #1 & #2 relay contacts are opened when one or more SMARTLINK

MRV "fault" conditions

occur; both contacts are closed when no system fault exists. A SMARTLINK

MRV "alarm" condition does not affect

the state of these contacts. (See page 10-30.7-66 for descriptions of fault conditions and page 10-30.7-50 for wiring

the Control Enable in a typical combustion system.) The two contacts are wired in series to prevent a single-point,

welded contact failure. Both CE1 and CE2 interface relays are driven by Control Interface output, RO2.

Note: A jumper is installed between CE1R and CE2. Field wiring should be connected to only CE1 and CE2R.

WARNING: Proper wiring of these contacts to the burner management equipment is an essential safety requirement

for burner shut down in the event of a SMARTLINK

MRV failure.

Purge Position Proven (PPP)

Purge Position Proven Return (PPPR)

Output: Purge Position Proven relay contact closes when all valve positions are greater than or equal to maximum

positions or user-defined, custom purge positions.

Light-Off Position Proven (LPP)

Light-Off Position Proven Return (LPPR

Output: Light-off Position Proven relay contact closes when all valve positions are less than or equal to minimum posi-

tions or user-defined, custom light-off positions

Custom Output #1 (CO1)

Custom Output #1 Return (CO1R)

Output: For systems with software version release 1C or later, the CO1/CO1R relay contact is opened when one or

more SMARTLINK

MRV "fault" conditions occur; this contact is closed when no system fault exists and serves as a

fail-safe, redundant combustion permissive/interlock output. (See page 10-30.7-66 for descriptions of all fault condi-

tions and page 10-30.7-50 for wiring CO1/CO1R in a typical combustion system.) The CO1 interface relay is ener-

gized by Control Interface output RO5. The CO1/CO1R contact opens 6 seconds after the Control Enable contacts

are opened. A SMARTLINK

MRV "alarm" condition does not affect the state of this contact.

WARNING: Proper wiring of this relay contact to the burner management equipment is an essential safety require-

ment for burner shut down in the event of a SMARTLINK

MRV failure.

Relay Input Terminal Block

Location: Terminal block assembly on lower DIN-rail of Interface Panel

All relay inputs below are solid-state with following specifications:

Input On-State Voltage: 120VAC (230VAC and 24VDC options available)

Input On-State Current: 25 mA (max)

Input Off-State (Leakage) Current: 4 mA

Command Common (CCOM) N/A: Common for all solid-stage relay input command signals listed below.

Purge Position Command (PPC)

Input: Purge Position Command drives all SMARTLINK

MRV valves to their maximum or user-defined, custom purge

positions if the LPC and MVC inputs are not energized.

Light-off Position Command (LPC)

Input: Light-off Position Command drives all SMARTLINK

MRV valves to their minimum or user-defined, custom

light-off positions if the MVC input is not energized.

Modulate Valves Command (MVC)

Input: Modulate Valves Command enables all SMARTLINK

MRV valves to synchronously modulate based on the 4-

20 mA firing rate command input signal. This command overrides the PPC and LPC commands when energized.

Remote Reset Command (RRC)

Input: Remote Reset Command resets the MRV system when a fault condition occurs and the system has entered

Shutdown Mode. (See page 10-30.7-66 for fault condition descriptions.)

Custom Application Command #1 (CAC1) Input: Reserved for future use.

Custom Application Command #2 (CAC2) Input: Reserved for future use.

4-20 mA Terminal Block Location: Terminal block assembly on lower DIN-rail of Interface Panel

4-20 mA In A + (INA+)

Input: Isolated 4-20 mA firing rate command; current flows into INA+ and out of INA- terminal; 4 mA = 0% firing rate

demand (minimum valve positions); 20 mA = 100% firing rate demand (maximum valve positions)

4-20 mA In A- (INA-)

4-20 mA In B+ (INB+)

Input: Reserved for future use.

4-20 mA In B- (INB-)