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R7999C CONTROLINKS™ CONTROLLER
7
32-00081EF—01
Table 3. R7999C Maximum Wiring Lengths
a
Use wide straps or brackets to provide minimum length, maximum surface area ground conductors. If a leadwire must be
used, use 14 AWG copper wire. Make sure that all mechanically tightened joints along the ground path are free of non-
conductive coatings and protected against corrosion on mating surfaces.
b
Follow local and NEC 1 codes.
c
Implies no limitations beyond voltage (current times resistance) drop considerations versus wire size constraints.
d
Requires ground shield at controller end. See Fig. 2, 4.
e
Ground shield to digital ground terminal C at controller end and and PC or laptop end.
Table 4. R7999C Status LED Blink Patterns.
A red LED, normally off, indicates a Lockout State when lit.
Terminal Name
Wiring Length (Maximum)
Wire Type
Minimum/Maximu
m Wire Size
Ground (G)
Short as possible
a
b
b
Line Power (L1)
No Restriction
c
b
b
Power Supply Neutral L2 (N)
No Restriction
b
b
High Fire (HF)
100 Feet
b
b
Modulate (MOD)
100 Feet
b
b
Low Fire (LF)
100 Feet
b
b
Limit/Ctrl Input (LCI)
No Restriction
b
b
Limit/Ctrl Output (LCO)
No Restriction
b
b
Controller input (CmA+)
Controller input (CmA-)
1000 Feet
d
Belden 9502, 2-conductor, 100%
shield coverage, 300V 80C (UL
2464, CSA PCC FT 4) or
equivalent.
18 to 24 AWG
Manual Ctrl (MNC)
10 Feet
d
Belden 9502, 2-conductor, 100%
shield coverage, 300V 80C (UL
2464, CSA PCC FT 4) or
equivalent.
18 to 24 AWG
Fuel 1 Select (FS1)
No Restriction
b
b
Fuel 2 Select (FS2)
No Restriction
b
b
Actuator Interface
(A1, F1-1, F2-1, FG-1)
(A2, F1-2, F2-2, FG-2)
(CW)
(S)
(CCW)
100 Feet
d
Belden 9535, 5-conductor, 100%
shield coverage, 300V 80C (UL
2464, CSA PCC FT 4) or
equivalent.
18 to 24 AWG
Configurable Sensor (XmA+)
Configurable Sensor (XmA-)
1000 Feet
d
Belden 9535, 2-conductor, 100%
shield coverage, 300V 80C (UL
2464, CSA PCC FT 4) or
equivalent.
18 to 24 AWG
RS485 DDL Commissioning port
10 Feet
e
18 to 24 AWG
Power (Green) LED State
Meaning
Always Off
Control has failed, or has no power.
Always On
Control cannot run or communicate until a critical fault has been corrected. This state
occurs at each power up or reset. Control is in the Initiate State or Alarm Initiate State or
Alarm Hold State.
Check that only one fuel has been selected, or that HF and LF are not active at the same
time. If HF and LF are active at the same time, the red LED will also be on.
1 short blink every interval
Control is in Postpurge or Standby State.
2 short blinks every interval
Control is in a low voltage condition.
3 short blinks every interval
Control is in the non-configured state.
4 short blinks every interval
Control is in the commissioning state.
Steady medium blink
Control is in the Run State.
Steady fast blink
Control is in manual mode.