Honeywell ControLinks R7999A, Руководство пользователя

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R7999A,B CONTROLINKS™ CONTROLLER
13 65-0238—10
a
It is possible that a random external electrical noise has caused a fault checking algorithm to be detected. Resetting the control
will allow recalculation of the fault and, if it is not a hard failure, the device will continue to operate. If the condition will not clear,
the device must be replaced.
b
Check ac waveform; severe noise on ac lines can corrupt sampling of ac signals.
c
Verify actuator total resistance and wiper measurements; check the ability of the actuator to travel full stroke using the manual
override buttons in the actuator. Verify input power to the actuator. if actuator is not functioning, replace the actuator.
d
Conditional Alarm. Causes the alarm output to be energized, the system may still be operating but requires attention in order to
modulate or to proceed with the light off sequence. The actuators would be positioned at lightoff point, minimum modulation point
or maximum modulation point, dependent on what the particular fault is and when the fault is introduced, relative to the R7999
ControLinks operating state.
Wiring Checkout and Error Faults
The ZM7999 commissioning, a S7999 touchscreen display, or
other monitoring tools provide an effective means of an indirect
status reading of all line voltage inputs and outputs. Use these
tools to confirm wiring. The commissioning tool and monitoring
tool environments require that a single fuel select input to be
active before proceeding with communications between the
tool and controller. Further, simultaneous HF and LF
commands from the burner are not allowed and will preclude
communications with the tools.
The act of bringing actuators successfully “on-line” verifies the
initial wiring between the controller and actuators. See error
codes 71 through 74 and/or 54 through 57 for details. Other
wiring problems occurring between the actuators and
controller, after commissioning, may be annunciated by fault
codes 41 through 53 or 61,67,68,69 or 82 through 86.
Burner control wiring interface problems are annunciated by
fault codes 13, 14, 15, 34, 37.
The Q7999 Universal Subbase is partitioned into a line voltage
section and a low voltage section. Utilize shielded cabling on
all low voltage wiring. Keep the earth ground cable shield short
as possible for all interface wiring as illustrated in Fig. 2.
Replacing an ML Actuator
When the ML7999 Actuator is identified for replacement, you
should do the following BEFORE the actuator is removed:
1.
Use the ZM software or the S7999 Touchscreen Display
and make sure the burner configuration has been saved.
2.
Go into the Commission and go to the Actuator that
needs to be replaced, and Unlock at least one of the
endpoints.
3.
Remove the wiring and actuator and install the replace-
ment without tightening the setscrews (as described in
the ML instructions).
4.
You can now go back through the commission procedure
to set up the new actuator by entering the serial number
and establish the end points.
5.
Once entered, you can download the existing curve and
verify the curve firing points.
If the motor had been removed and is now added to the R7999
system, the R7999 will lockout because the motor serial
numbers won’t match.
1.
Make sure the system is in “Standby”
2.
Go to the replaced actuator and remove the cover, above
the wiring about the center of the motor is a Red connec-
tor. Carefully disconnect it.
86 FGR actuator nonresponsive.
Check actuator wiring and stuck damper/valve.
c
Were the actuators
commissioned properly–are they set off their mechanical stops?
87 Internal math error (Microprocessor test failed).
Reset control.
a
91 The 4 to 20 mA firing rate input is below 3 mA, Out of Range—Low.
(Actuators return to or remain at the minimum modulation point with
the alarm on; the control remains operational only to the extent that
Minimum Modulation firing operation is allowed.)
Check CmA+-input (Terminals 39 and 40) for proper operation polarity
and range. The input must be within 3.0 mA to 21.0 mA. The voltage at
this terminal must be within 0.7 to 5.0 Vdc, respectively.
Conditional Alarm—Alarm output is energized; controller continues to
run.
92 The manual potentiometer rate input is higher than an allowable range,
i.e., Out of Range—High. (The actuators move to the maximum
modulation point with alarm ON, control will remain operable, yet when
MANUAL MODE is selected, maximum modulation and alarm output
shall occur.) Auto mode operation is not affected.
The Manual potentiometer is out of range high. Make sure a 5000 ohm
(±10%) potentiometer is being used and wiring to it is correct.
Shielded cable is recommended.
Conditional Alarm—Alarm output is energized; controller continues to
run.
d
93 The auxiliary 4-20 mA input must be below 3.0 mA when configured for
use. (The actuators return or remain at the minimum modulation point
with alarm ON, the control will remain operable only to the extent that
Minimum Modulation firing operation is allowed.)
Check XmA+- input (Terminals 37and 38) for proper operation polarity
and range. The input must be within 3.0 mA to 21.0 mA. The voltage at
this terminal must be within 0.7 to 5.0 Vdc respectively.
Conditional Alarm—Alarm output is energized; controller continues to
run.
d
94 After LCO is set by the R7999, the Burner Control must provide a
Lightoff or Purge request within 20 seconds. (Controller remains in a
processing demand condition indefinitely waiting for valid inputs on the
LF, MV and HF inputs; the alarm is sounded after the 20-second period
expires.)
Check burner control interface wiring and burner control operation
(Terminals 10, 11, 12). The R7999 is waiting for a command via these
terminals.
Conditional Alarm—Alarm output is energized; controller continues to
run.
d
Table 7. Fault Listings and Descriptions. (Continued)
Fault/
Blink
Code Description Corrective Action