Honeywell 700 ユーザーズマニュアル

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HONEYWELL MODEL 700/800 SIGNAL PROCESSOR AND VIEWING HEAD
3
66-2069—02
APPROVALS
S70X/S80X Viewing Heads (Connector series and Pipe fit 
series [PF])
CSA for CLASS I, DIV 2, GROUPS A, B, C, D & T4A
FM 7610/NEMA 4X and CLASS 1, DIV 2, GROUPS A, B, C, D 
& T4A*
SIL 3 “Fit for Use”
IECEx CSA 10.0003 Ex nA IIC T4 Gc
     -40<Ta<85ºC, -40<TA<185ºF
*IP67/NEMA 4/4X rating applies when connector ring is 
properly tightened and cable is UV shielded
700ACSP and 700DCSP Signal Processors
CSA (C, US)
FM
INSTALLATION
When Installing These Products...
1. Read these instructions carefully. Failure to follow them 
could damage the products or cause a hazardous 
condition.
2. Check the ratings given in the instructions and one the 
products to make sure the products are suitable for your 
application.
3. Installer must be a trained, experienced, flame 
safeguard control technician.
4. After installation is complete, check out product 
operation as provided in these instructions.
Signal Processor Mounting
The 700ACSP and 700DCSP signal processors mount on a 
standard 35mm DIN rail. They snap into place and may be 
released from the rail using a flat screwdriver.
Grounding and Shielding
NOTE: Installer must be a trained, experienced flame 
safeguard service technician and should be 
familiar with the equipment operation and 
limitations and be aware of any applicable local 
codes and regulations.
1. Connect a safety ground to the viewing head housing (if 
applicable). A ground screw is provided on the exterior 
of the viewing head housing for this purpose.
WARNING
The viewing head housing is grounded through 
cable/signal processor, so you must ensure that 
AC/DC potentials at ground of signal processor 
and viewing head are the same, or damage to the 
cable or signal processor can result.
2. The viewing head and all associated cable/conduit must 
be at least 12 inches (31 cm) from any source of high 
energy or voltage (for example, igniter equipment).
3. Install a ground wire from the ignition transformer case 
to the igniter assembly.
4. Ensure all igniter wires and cables show no signs of 
wear. Replace any igniter cables or wires that are frayed 
or cracked.
5. The viewing head must be electrically isolated from the 
burner front.
a. Electrical isolation can be accomplished by 
installing an Ultem nipple (R-518-13) or an Ultem 
locking coupler adapter (R-518-PT13 or R-518-
PT13L) in conjunction with a locking coupler (R-518-
CL13-HTG) between the viewing head flange and 
the burner mount.
b. The purge air line should also be isolated from the 
viewing head. This can be accomplished by 
installing any insulating material, for example a 
rubber hose, in between the purge air line and the 
viewing head.
Signal Processor Power 
Connections
The Model 700ACSP power and relay connections are shown 
in Fig. 1. The AC power supply to the 700ACSP Signal 
Processor passes through a 2A fuse and an inrush current 
limiter.
The Model 700DCSP power and relay connections are shown 
in Fig. 2. The maximum current requirement for each 
700DCSP is 250mA.
In the Model 700 signal processors the flame relay (RF A/B 
ON, OFF, COM) has two sets of FORM C (SPDT) contacts 
and the self-check relay (SC ON, OFF, COM) has one set (Fig. 
1 and Fig. 2). The self-check relay is energized whenever the 
signal processor is powered and is operating normally, 
whether the flame relay is energized or not. Internally, the 
flame relay is wired in series with the self-check relay (not 
shown), which prevents the flame relay from energizing if the 
self-check relay is not energized.
Unique fail-safe circuitry for the self-check and flame relays 
ensure that in the event of any critical component failure 
occurrence, system response will be to de-energize the self-
check relay, which in turn de-energizes the flame relay.
Some of the internal power wiring of the Model 700ACSP and 
Model 700DCSP signal processors is shown in Fig. 1 and 
Fig. 2. Rectifier diodes separate the battery backup input from 
the main power bus until the battery voltage exceeds the 
internal DC voltage plus a diode voltage drop. Resettable 
fuses (shown as resistors with slashes) and conventional 
fuses prevent internal failures from loading the power sources. 
With the Model 700DCSP, if a backup battery is to be used 
with a main power supply, the two power sources would be 
wired as shown in Fig. 2. If no backup battery is to be 
installed, the main power supply can be connected at +26V 
PWR and GND as shown in Fig. 2 or it can be connected to 
the +24V BATT input and GND. It is preferable to use the 
battery connections because it takes advantage of the 
resettable fuse at the battery input; resettable fuses recover 
automatically from a fault within a few seconds after power is 
removed. At the +26V PWR input and its associated GND, 
conventional1A fuses are used because they are able to 
protect against 240VAC being applied by accident (this could 
happen if a Model 700DCSP is installed in a cabinet wired for 
a Model 700ACSP).