Spirax Sarco SX100 Specification sheet

IM-S27-06 CH Issue 2 1
SX100
Controller
Quick Set-up Manual
IM-S27-06
CH Issue 2
2230053/2
Printed in the UK © Copyright 2003
1. Introduction
2. Controller

IM-S27-06 CH Issue 22
1. Introduction
The purpose of this manual is to allow quick set-up of the SX100 controller, providing information
on the most commonly used functions when used for control of the EasiHeat unit. See
the SX100 Operator's Manual and Site Manual.
2. Controller
Please use this manual as a guide, in conjunction with the Controller Site Manual and Operator's
Manual supplied.
The programmer has four operating modes (plus a configuration mode):
Display status - RUN, HOLD, SET, PRG indicators Off
Base mode This is for PID control operations with no program running. In this
mode a program may be selected to run.
Display status - Run indicator On
Program run mode A selected program is running, held or waiting for a pre-defined
delay before starting. In this mode the operator can view status
and program information.
Display status - SET and PRG indicators On
Program define mode Used to view/create/edit programs. This mode is entered from
BASE MODE or from PROGRAM RUN MODE.
Controller define mode Display status - SET indicator On
Refer to SX100 Site Manual Used to define the controller characteristics.
Display status - 'ConF' visible in top display
Configuration mode Used to configure the controller for different hardware and
input/output options.
Additional information and details of factory settings when used for the EasiHeat
application are detailed in the following Sections.

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2.1 Setting the correct time and day of the week for the
Real Time Clock (RTC)
From BASE MODE:
-Press UP and SCROLL buttons together.
-Use UP button to display the correct Lock Code value (Factory set to 10).
-Press SCROLL button.
-Press PROF button repeatedly until 'A' is displayed in the 'P No.' window.
-Press the SCROLL button repeatedly until 'RTC Time' is displayed in lower window.
-Press the UP or DOWN buttons to change the time to the correct value. Note: if the
time setting is wrong by a large amount, keep the UP or DOWN button depressed rather than
pushing repeatedly: the speed at which the display increments will increase after a short time.
-Press the SCROLL button until 'RTC Day' is displayed in the lower window.
-Press UP or DOWN buttons to change the day.
-If time and day are now correct, press MODE key twice until 'Exit?' appears in the
lower window.
-Press SCROLL key to return to BASE MODE.
2.2 Selecting and running a program
(Refer to SX100 Operator's Manual)
Note:ifaprogramisalreadyrunning,(i.ethe'RUN'indicatorislit),firstpresstheRUN/HOLD
key for more than 5 seconds to return unit to BASE MODE.
From BASE MODE (RUN, HOLD, SET, PRG indicators off):
-Hold down the PROF key until the required program (profile) number (1-8) is displayed in the
lower right hand 'P No.' window.
-Press the RUN/HOLD key once to start the program. The RUN indicator will then go ON;
the programmer is now in PROGRAM RUN MODE.
To exit from PROGRAM RUN MODE, hold down the RUN/HOLD key for more than five seconds.
The program will be aborted and a return is made to BASE MODE.

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2.3 Adjusting the setpoint
(Refer to SX100 Operator's Manual)
Note: This setting is normally set to 0°C . It does not represent the running setpoint
temperature. Setting the temperature at this level will prevent the steam valve opening with
no circulating pump running.
The actual running temperature is normally set from the 'Program settings', and is set for
each segment of the program (Refer to Tables 2 and 3, and 'Example of how to set a
program', page 8).
With the setpoint programmer in BASE MODE (i.e with the RUN, HLD, SET and PRG indicators
OFF), the two main displays will show the process variable value (upper display) and the setpoint
value (lower display – Read only).
To change the setpoint value:
-Press the SCROLL key until the message area displays one of ;
Ctr SP °C, Ctr SP °F or Ctr SP (according to input range)
(Note: Factory set to indicate 'Ctr SP 0°C').
-Use the UP and DOWN keys to change the setpoint value (in the lower display) as required.
-When the setpoint value is set as desired, press the SCROLL key again to return to the initial
display. The controller will remain in BASE MODE.
2.4 Defining and viewing a program
(PROGRAM DEFINE MODE)
The setpoint programmer may be put into PROGRAM DEFINE MODE from either BASE MODE
or PROGRAM RUN MODE i.e. with a program currently running.
Entry into PROGRAM DEFINE MODE:
-Press the SCROLL and UP keys simultaneously. The lower main display will show '0'
and the message display will show: 'Unlock'.
-Use the UP and DOWN keys to set the value in the lower main display to the PROGRAM
DEFINE MODE lock value and then press the SCROLL key.
(Note: This value is initially factory set to 10).
The setpoint programmer will now enter PROGRAM DEFINE MODE, i.e the SET and PRG
indicators will go ON and the operator will be able to edit programs and segments.
-The PROF button should then be used to either select 'A' in the 'P No.' window if choosing
to view/modify settings common to all programs, or to select Nos.,1 to 8 for viewing/modifying
settings which apply to those program Nos., only (Refer to Tables 1, 2 and 3).
-The MODE key can then be used:
i-to switch to CONTROLLER DEFINE MODE
(i.e PRG led goes off, SET led stays on.) refer to Table 4.
ii - to show a message display.
-To return to PROGRAM DEFINE MODE press the MODE key; to return to BASE MODE,
press the SCROLL key.
-After entering PROGRAM DEFINE MODE the SCROLL key can be used to step through
the sequence.
-The displayed Program Number may be changed using the PROG key and the displayed
Segment Number may be changed using the RUN/HOLD key.

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Table 1
Parameters common to all programs
('P No.' = A)
(PROGRAM DEFINE MODE)
To enter from BASE MODE:
-Press UP and SCROLL buttons together.
-Press UP button to select unlock code.
-Press SCROLL button.
-Press PROF button repeatedly until 'A' is visible in the 'P No.' display. This permits the
user to view/modify parameters common to all programs. (refer to the Table below).
-Press the SCROLL button as required to select the required parameters.
Note: If wishing to view/modify parameters which are for a specific program No.
(e.g. 1 - 8), press the PROF button until the required program No. is visible in the
'P No.' window, (see Table 2).
Parameters common to all programs
('P No.' = 'A', 'SEG' = 'blank', SET and PRG leds on)
Parameter Message Function Available settings Factory
display (Lower main display) settings
Start on Start on Setpoint value at SEtP SetP
start of each program Proc
End on End on Setpoint value at F_SP SetP
end of each program SEtP
Delay (hrs / mins) between Numerical
Delay time Delay program initiation and value 0.00
program start
Program Operator changes On – not Permitted
lock Lockprog permitted / not permitted OFF -Permitted ON
whilst program is running
Power fail Recovery Response to restoration Refer to the Operators
recovery of power after power failure Manual Section 8.2 0.00
RTC Time RTC Time Real time clock initial setting
(hrs/mins) 0.10 – 24.00 Various
RTC Day RTC Day Real Time Clock intial setting Days of week Various
(day of week)
To return to BASE MODE:
-Press MODE button twice until 'Exit?' appears in lower window.
-Press SCROLL button.

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Table 2
Parameters which apply to a specific program No.
('P No.' = 1 - 8)
(PROGRAM DEFINE MODE)
To enter from BASE MODE:
-Press UP and SCROLL buttons together.
-Press UP button to select unlock code.
-Press SCROLL button.
-Press PROF button repeatedly until required program no. is visible in the 'P No.' display.
-Then refer to the Table below.
(To modify the SEGMENTS which apply to each of these programs, press the RUN /HOLD
button to show the required SEGMENT No. in the 'SEG' window, then refer to Table 3)
Parameters which apply to a specific program No.
('P No.' = 1 - 8, 'SEG' = blank)
Program number
Parameter 1* 2* 3 4 5 6 7 8
Cycles 1inF111111
Auto Hold off off off off off off off off
Hold Band n/a n/a n/a n/a n/a n/a n/a n/a
Hold On n/a n/a n/a n/a n/a n/a n/a n/a
Pre x 60 none none none none none none none none
Timer on off off off off off off off
Start Hr 08.00 24.00 24.00 n/a n/a n/a n/a n/a
Start Dy 5 dy ALL sat n/a n/a n/a n/a n/a
*Note: Program No.1 is set for a 5 day week.
Program No.2 is set for constant mode.
Program Nos. 3 to 8 are free for setting to the requirements of the user.
To return to BASE MODE:
-Press MODE button twice until 'Exit?' appears in lower window.
-Press SCROLL button.

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Table 3
Parameters which apply to segments in a specific program
('P No.' = 1 - 8, SEG No. = 1 - 5)
(PROGRAM DEFINE MODE)
To enter from BASE MODE:
-Startfrom Table2, withSEG windowblank,thentomoveontotheSegmentNo.parameters,
press the RUN/HOLD button (Segment No. will be displayed in lower right hand
'SEG' window).
Parameters in any / each segment in a specific program
('P No.' = 1 - 8, 'SEG' = 1 - 5)
Program number
Parameter 1* 2* 3 4 5 6 7 8
Segment 1
Final SP 65 65 0 0 0 0 0 0
Time(hrs/mins) 0.02 0.02 0.01 0.01 0.01 0.01 0.01 0.01
Event 0001 0001 000 000 000 000 000 000
Segment 2
Final SP - -------END END END END END END
Time(hrs/mins) 8.30 8.30 END END END END END END
Event 0001 0001 END END END END END END
Segment 3
Final SP 20 END
Time(hrs/mins) 0.15 END
Event 0001 END
Segment 4
Final SP END END
Time(hrs/mins) END END
Event END END
Segment 5
Final SP
Time(hrs/mins)
Event
*Note: Program No.1 is set for a 5 day week.
Program No.2 is set for constant mode.
Program Nos. 3 to 8 are free for setting to the requirements of the user.
To return to BASE MODE:
-Press MODE button twice until 'Exit?' appears in lower window.
-Press SCROLL button.

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2.5 Example of how to set a program:
In this example we wish to create a program which will turn on domestic hot water heating in a
building. (This example is the same program as is factory set in Program No. 1).
The required settings are that:
-Start time = 0800 hrs
-Days hot water is required = Monday to Friday
-Temperature setting = 65°C
-The time domestic hot water heating is required for is 9 hours. (Note: There is no time setting
for the switch off time, the heating period is hours and minutes, beginning at the Start time).
We will allow the bypass circulating pump to operate for 5 minutes after switch off, to dissipate the
residual heat in the heat exchanger. This prevents any nuisance tripping of high limit temperature
devices).
To enter these details, first of all put the programmer into BASE MODE (i.e. RUN, HLD, SET, PRG
indicatorsarealloff) Ifaprogramisrunning(RUNindicatorislit),thenpresstheRUN/HOLDbutton
for more than 5 seconds to return the unit to BASE MODE.
Please refer to Table 2 (PROGRAM DEFINE MODE)
To enter from BASE MODE:
-Press UP and SCROLL buttons together.
-Press UP button to select unlock code.
-Press SCROLL button.
-Press PROF button repeatedly until the required Program No. is visible in the 'P No.' display.
Then make sure the following parameters are set:
(Important: Make sure the SEG window is blank, if it isn't then use the RUN/HOLD button to
do this).
-'Cycles 'should be set to 1.
-'Auto Hold 'should be OFF.
-'Pre x 60' should be NONE.
-'Timer 'should be ON.
Now we can enter the times and temperatures:
-Start Hr should be set to 08.00 (i.e. 08.00 Hrs)
-Start Dy should be set to '5 Dy' (i.e. MONDAY – FRIDAY)
We now need to enter the settings for the individual segments in the program (Refer to Table 3)
Importantnote:If an 'END', 'J01-J08',or'rEP'message appears inthemiddlewindow, when
trying to enter the following settings, it can be changed by:
-Pressing SCROLL button until 'Time' is shown in lower window.
-Using UP and DOWN buttons to select either a time setting or 'END' as required.

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Segment 1
-Press the RUN/HOLD button so that '1' appears in the SEG window (This means we are
programming the settings for Segment No. 1).
-Use UP and DOWN buttons to set the required 'Final SP', i.e. 65. This is the desired
temperature for the end of the segment. The setpoint will ramp UP from the measured
temperature at start to the Final SP over the 30 minute period.
-Press SCROLL.
-Use the UP and DOWN buttons to set the required 'Time', i.e. 0.30. (This means 30 minutes
from start time to end of Segment No. 1).
-Press SCROLL.
Use the UP and DOWN buttons to set 'Event' to 0001. (This means that the bypass pump, if fitted,
designated 'Event 1', actually runs for the whole segment time).
Segment 2
We now wish to maintain a temperature of 65°C for 8½ hours:
-Press RUN/HOLD button to indicate '2' in the 'SEG' window (We are now programming the
settings for Segment No. 2)
-Press SCROLL button twice (until 'Final SP' appears in lower window, check that 'SEG' No.
is still 2).
-Use UP and DOWN buttons together to set the 'Final SP' to ----(This means the heating
will 'dwell' i.e. remain at the previous Final SP setting of 65°C).
-Press SCROLL.
-Use UP and DOWN buttons to set time to 8½.
-Press SCROLL.
-Use UP and DOWN buttons to set 'Event' to 0001.
Segment 3
We now wish to ramp the temperature DOWN over a 15 minute period at the end of the
heating period with the bypass pump running, to remove residual heat from the system:
-Press RUN/HOLD button to change to Segment No. 3.
-Press SCROLL key until 'Final SP' appears in lower window.
-Press the DOWN button until the display shows '20' (i.e. setpoint of 20°C).
-Press SCROLL.
-Use the UP and DOWN buttons to set the Time setting to 0.15 (i.e. 15 minutes).
-Press SCROLL.
-Use the UP and DOWN buttons to set 'Event' to 0001.
Segment 4
We now need to end the program, by entering the 'END' command in Segment No. 4:
-Press RUN/HOLD button to change to Segment No. 4.
-Press SCROLL key repeatedly until 'Time' appears in lower window.
-Press the DOWN button until the display shows 'END'.
-Press the MODE button twice until 'Exit?' appears in lower window.
-Press SCROLL to exit the program.
The Program has now been set as required.

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Table 4
CONTROLLER DEFINE MODE
To enter from BASE MODE:
-Press UP and SCROLL buttons together.
-Press UP button to select unlock code.
-Press SCROLL button.
-Press MODE button.
Controller parameters
These are independent of Program or Segment Nos. ('P No.' 1 - 8),
SET led on, SEG display blank.
Parameter Message Function Factory
display setting
Input filter time constant Filter Defines time constant for input filter 1.0
Process variable offset Offset Modifies actual PV value 0
Output 1 power Out 1 Indicates current output 1 power level 100
Output 2 power Out 2 Indicates current output 2 power level N/A
Proportional band 1
(% span) P. Band 1 Proportional band 8.0*
Proportional band 2 P. Band 2 Proportional band N/A
Reset (mins / secs) Reset Integral time 0.12*
Rate (mins / secs) Rate Derivative time 0.03*
Overlap Overlap Overlap of two PB's N/A
Bias Bias Bias applied to output power 2
Diff1
On/off differential Diff2 Switching differential N/A
Diff
Setpoint high limit SP High Maximum limit for setpoint adjustment 100
Setpoint low limit SP Low Minimum limit for setpoint adjustment 0
Motor travel time MT time Valve travel time N/A
Minimum motor MinDrive Minimum drive effort to initiate
'on' time movement in a stationary valve N/A
Recorder output Rec High Value for which recorder
scale maximum output is maximum N/A
Recorder output Rec Low Value for which recorder output N/A
scale minimum is minimum
Output power limit Out High Limits power level of output 1 100
Output 1 cycle time CycTime1 Limits frequency of operation
of output relay N/A
Output 2 cycle time CycTime2 Limits frequency of operation
of output relay N/A
* Factory setting to set PID. Please see Database DB-S27-08.

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Table 4 (Cont'd)
CONTROLLER DEFINE MODE
Parameter Message Function Factory
display setting
Process high
alarm 1 value HiAlarm1 Alarm level 85
Process low
alarm 1 value LoAlarm1 Alarm level N/A
Band alarm 1 value BaAlarm1 Band alarm N/A
Deviation alarm DeAlarm1 Deviation alarm N/A
Alarm 1 hysteresis value All Hyst Hysteresis band 1
Process high
alarm 2 value HiAlarm2 Alarm level N/A
Process low
alarm 2 value LoAlarm2 Alarm level 10
Band alarm 2 value BaAlarm2 Alarm level N/A
Deviation alarm 2 value DeAlarm2 Alarm level N/A
Alarm 2 hysteresis Al2 Hyst Alarm 2 hysteresis 1
Loop alarm enable Loop Alm Enables/disable loop alarm OFF
Loop alarm time Lpatime For on/off control loop alarm N/A
Scale range Range Pt For linear inputs, defines the decimal
decimal point point position N/A
Scale range maximum Range Hi For linear inputs defines
scaled input value N/A
Scale range minimum Range Lo For linear inputs defines
scaled input value N/A
Manual control Enables/disables operator selection
enable/disable Auto PT of manual control OFF
Auto pre-tune Determines whether the pre-tune facility
enable/disable Auto PT is automatically activated on power-up OFF
Manual control A/M enable Enables/disables operator selection
enable/disable of manual control ON
Communications ComWrite Enables/disables changing of
write enable/disable parameters/settings via RS485 link N/A
Lock Defines the 4 digit code required to
Lock value or enter controller/program define mode 10
Lock C
To return to BASE MODE:
-Press MODE button once, or until 'Exit?' appears in lower window.
-Press SCROLL button.

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2.6 Example of how to set the PID settings
(Refer to Table 4, pages 10 and 11)
It is a good idea to set the PID values to their optimum values, using for example, the
Ziegler-Nicholls frequency response method (see DB-S27-08).
In order to adjust the settings, from BASE MODE, or RUN MODE:
-Press UP and SCROLL buttons together.
-Press UP button to select unlock code.
-Press SCROLL button.
-Press MODE button.
-Press SCROLL until 'P. Band1' appears in lower window. (Proportional band value).
-Use UP or DOWN buttons to set the desired value for Proportional band.
-Press SCROLL until 'Reset' appears in lower window. (Integral/reset time value).
-Use UP or DOWN buttons to set the desired value for the Integral time.
-Press SCROLL until 'Rate' appears in lower window. (Derivative Time/Rate value).
-Use UP or DOWN buttons to set the desired value for the Derivative time.
To return to the previous mode:
-Press MODE button once, or until 'Exit?' appears in lower window.
-Press SCROLL button.
2.7 Entry into configuration mode
(Refer to the Site Manual - Section 4)
Step 1 Power DOWN the instrument.
Step 2 Power UP the instrument. All LED's and indicators will come on temporarily (automatic
test routine) then the normal BASE MODE displays will appear.
Step 3 Within 30 seconds of power-up, hold down the UP and SCROLL keys for approximately
five seconds. (The display will shortly change to 'Unlock', but keep pressing the UP and
SCROLL keys until the top display indicates 'ConF').
The setpoint programmer is then in configuration mode:
Step 1 Select desired parameter with SCROLL key.
Step 2 Adjust parameter to desired value using UP/DOWN keys. Value display will flash.
Step 3 Confirm new value by pressing MODE key. Value display will cease to flash.

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Table 5
Configuration mode parameters
Parameter Message Function Factory
display setting
Primary input Input Code displayed defines
range input type/range 7220
Control action Control Specifies control action of output 1 Stdr
Alarm 1 type Alarm 1 Specifies alarm 1 operation P_hi
Alarm 2 type Alarm 2 Specifies alarm 2 operation P_Lo
Alarm inhibit Inhibit Specifies which alarms are inhibited nonE
Output 2 usage Out 2 Use Specifies use of output 2 A2_d
Output 3 usage Out 3 Use Specifies use of output 3 A1_d
Defines parameter used to specify
Segment mode Seg Mode duration of each segment (along with t1
final setpoint value)
End of EOPRelay Selects when end of program
program relay relay is energised End
Event state Ev State Selects whether event output states
are held or reset at end of program OFF
Number of Locks Selects one or two lock 1
lock codes codes to be used
Lock code LockCode Displays current lock code value 10
To exit from CONFIGURATION MODE depress the UP and SCROLL keys together. The
controller will then return to BASE MODE.
Note: the unit will return to BASE MODE if when in CONFIGURATION MODE there is
no front panel activity for five minutes.

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2.8 Hardware definition parameters
(Refer to SX100 Site Manual)
This is a special facility which specifies the hardware fitted (input type, output types etc.); this must
be compatible with the hardware actually fitted.
It can be accessed, in CONFIGURATION MODE by pressing the DOWN and SCROLL keys
together. The message display will then show 'HwDefine', and the lower display will show a four
digit number.
To view the other parameters press the SCROLL key.
Table 6
Hardware definition parameters
Parameter Message Function Factory
display setting
Hardware
definition code HwDefine Specifies hardware fitted 1711
External options Ext Opt Specifies which external option
devices are fitted OUT
Communications Comms Specifies which communications
options are fitted NONE
To exit from HARDWARE DEFINITION MODE , press the DOWN and SCROLL keys together to
return to CONFIGURATION MODE.
2.9 Self-tune
(Refer to SX100 Operator's Manual)
We do not recommend the use of self-tune on the EasiHeat package especially when used as
an instantaneous water heater. It is normally preferable to adjust the PID settings to match the
system manually.
2.10Pre-tune
(Refer to SX100 Operator's Manual)
Not required.
2.11Manual control
(Refer to SX100 Operator's Manual)
Not required.

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