Parker Sporlan S3C - Defrost CT Sensor Setup

Bulletin 100-50-9.1 – Page 111
6. Once the parameter is changed, press SET to commit
the change.
7. Press the ESC button 3 times to revert to the default
display.
Defrost Notes:
1. If evaporator fans are programmed to be
off during defrost, it is desirable to delay
resumption of operation until the evaporator
temperature is sufficient to re-freeze
any remaining defrost water. Coil Outlet
Temperature reading is used for this function.
2. If the Fan Delay Temperature is not met within
the Fan Delay Time, fan operation will resume
when this time has elapsed.
3. There can be up to 8 defrost groups within
a line-up. This allows individual portions of
a case line-up to share a common defrost
schedule while the entire line-up shares a
common EEPR, DA set point, suction pressure
set point, etc.
4. Coil drain allows for elimination of defrost
water prior to resumption of refrigeration.
5. Maximum elapsed time at which active defrost
mechanism (Heater, Hot Gas) deactivates if
Termination Temperature not reached.
12.2 DEFROST SCHEDULE
The S3C offers a simple schedule and a custom schedule.
The simple schedule only includes start time and number
of defrosts per day. The custom schedule can be configured
for each individual day or weekly defrost times.
12.2.1 SIMPLE DEFROST SCHEDULE
1. From the default display, press the  button. e
display will show   .
2. Use the ▲▼ buttons to enter the administrator
password and press SET.
3. e display will show ; press SET.
4. Press the ▲ button to scroll to the def(defrost
conguration menu); press SET.
5. Press the ▼ button to scroll to the df(defrost start
time); press SET.
6. Use the ▲▼ buttons to scroll to start time (in 24 hour
time); press SET.
7. Press the ▼ button to scroll to the dfd(defrost per
day); press SET.
8. Use the ▲▼ buttons to scroll to the amount of defrosts
per day; press SET.
9. Press the ESC button 3 times to revert to the default
display.
12.2.2 CUSTOM DEFROST SCHEDULE
A custom schedule can only be configured through BAS
communications.
12.3 DEFROST CT SENSOR
The S3C Case Control system supports an external current
transformer (CT) to monitor defrost heater current. The
current is used internally to the controller for diagnostic
purposes to ensure proper defrost function. The defrost
heater current can also be displayed through the Display
Module (DM) for troubleshooting purposes. The controller
comes default with the auxiliary temperature sensor input
set to e to measure temperature. To use the CT, the
auxiliary input must be configured to ef.
1. From the default display, press the  button. e
display will show   .
2. Use the ▲▼ buttons to enter the administrator
password and press SET.
3. e display will show ; press SET.
4. Press the ▲ button to scroll to the e(sensor
conguration menu); press SET.
5. Press the ▲ button to scroll to u(auxiliary sensor
conguration); press SET.
6. Press the ▲ button to scroll to def(defrost current
sensor); press SET.
7. Press the ▲ button to scroll to d(defrost current
sensor type); press SET.
8. Scroll to sensor type, based on the following chart; press
SET.
9. Press the ▲ button to scroll to d(defrost current
sensor range); press SET.
10. Use the ▲▼ buttons to enter the sensor range (5 to
50A); press SET. Use 25 for Sporlan CT Item 953507.
11. Press ESC button three times to return to default
display.
Note: The Auxiliary Temperature input on the S3C Case
Control can be used as an additional temperature or
support for the Defrost CT.
Display Description
5
0 to 5V output (Use for Sporlan CT item 953507)
1
0 to 10V output