Johnson Controls YORK YCAL0041EC, Установка, эксплуатация и обслуживание, Страница: 159 / 168

FORM 150.66-NM1 (708)
159
JOHNSON CONTROLS
10
RECEIVED DATA (CONTROL DATA)
The Middle Market receives 8 data values from the
ISN. The fi rst 4 are analog values and the last 4 are
digital values. These 8 data values are used as control
parameters when in REMOTE mode. When the unit is
in LOCAL mode, these 8 values are ignored. If the unit
receives no valid ISN transmission for 5 minutes it will
revert back to all local control values. Table 33 lists
the 4 control parameters. These values are found under
feature 54 on the ISN.
ISN CONTROL
TABLE 34 – ISN TRANSMITTED DATA
TRANSMITTED DATA
After receiving a valid transmission from the ISN, the
unit will transmit either operational data or history buffer
data depending on the “History Buffer Request” on
ISN PAGE 10. Data must be transmitted for every ISN
page under feature 54. If there is no value to be sent to
a particular page, a zero will be sent. Tables 34 and 35
show the data values and page listings for this unit.
ISN PAGES listed are ENG PAGE
REFERENCES and must be decoded
to the corresponding PAGE REF
point map related to the communica-
tions protocol type utilized. The latest
point map information is listed on the
Johnson Controls Group Equipment
Integration website.
ISN
CONTROL DATA
PAGE
P03
SETPOINT
99 = AUTO
P04 LOAD LIMIT STAGE (0,1, 2)
P05 –
P06 –
P07
START/STOP COMMAND
(0 = STOP, 1 = RUN)
P08 —
P09 —
P10
HISTORY BUFFER REQUEST
(0 = CURRENT DATA, 1 = LAST HISTORY DATA)
TABLE 33 – ISN RECEIVED DATA
ISN
PAGE
CHARACTER TYPE DATA
P11 8-11 Analog
Leaving Chilled
Liquid Temp.
P12 12-15 Analog
Return Chilled
Liquid Temp.
P13 16-19 Analog ----
P14 20-23 Analog ----
P15 24-27 Analog
SYS 1 Suction
Temp. (EEV Only)
P16 28-31 Analog Ambient Air Temp.
P17 32-35 Analog
SYS 1 Suction
Superheat
(EEV Only)
P18 36-39 Analog
SYS 1 Run Time
(Seconds)
P19 40-43 Analog SYS 1 Suction
Pressure
P20 44-47 Analog
SYS 1 Discharge
Pressure
P21 48-51 Analog ----
P22 52-55 Analog ----
P23 56-59 Analog
SYS 1 EEV
Output %
(EEV Only)
P24 60-63 Analog
SYS 1
Anti-Recycle Timer
P25 64-67 Analog
Anti-Coincidence
Timer
P26 68-71 Analog
SYS 2 Suction
Temp. (EEV Only)
P27 72-75 Analog
SYS 2 Run Time
(Seconds)
P28 76-79 Analog
SYS 2
Suction Pressure
P29 80-83 Analog
SYS 2
Discharge Pressure
P30 84-87 Analog ----
P31 88-91 Analog ----
P32 92-95 Analog
SYS 2
Suction Superheat
(EEV Only)
P33 96-99 Analog
SYS 2
Anti-Recycle Timer
P34 100-103 Analog
SYS 2 EEV
Output %
(EEV Only)
P35 104-107 Analog # of Compressors
P36 108 Digital SYS 1 Alarm
P37 109 Digital SYS 2 Alarm