38
4-20mA Input Level / Pressure (1 / 2) Menu Options
The 4-20mA Inputs on the CSC400 allow the user to configure a variety of options to support a wide variety of applications
and equipment. Normal 4-20mA or 1-5V ranges can be selected, or custom ranges and units can be entered by the user for
displaying on the four-line display. The 4-20mA inputs can also be configured to alarm and/or shutdown the ignitors once the
desired trip-point has been reached (above a High Trip-point and/or below a Low Trip-point). The High Trippoint must be
above the Low Trippoint value. Similarly, the Low Trippoint value must be below the High Trippoint value.
#
Menu Selections
Type
Description
Possible Options/Values
1
Format: 4-20mA
Option
Format of the 4-20mA input:
4-20mA or 1V-5V
4-20mA input,
1-5V input
2
SetPt Ctrl: None
Option
Secondary 4-20 Input setpoint control
for selected TMain.
None, IGN1, IGN2, or IGN1&2. Either
4-20mA Input may control a TMain
solenoid. An OR operation is
performed.
3
Lo Alarm Enabled
Option
Alarm if 4-20mA Input is Below Trip-
point: Enable/Disable
Enable/Disable
4
Hi Alarm Enabled
Option
Alarm if 4-20mA Input is Above Trip-
point: Enable/Disable
Enable/Disable
5
SD on Lo Alarm Yes
Option
Shutdown upon Low Alarm? Yes/No
Yes, No
6
SD on Hi Alarm No
Option
Shutdown upon High Alarm? Yes/No
Yes, No
7
SD Latched
Option
Shutdown Latch select
Latched/Unlatched
8
Units mA
Option
Units for 4-20mA input
4-20mA, 1-5V, gallons, m3, psi, kPa, %
9
Low ( 4) 4 mA
Option
Range Low value (4mA level)
4.00 - 20.00, 0 - 32000, -60 - 1200
(depending on selected units)
10
High (20) 20mA
Option
Range High value (20mA level)
4.00 - 20.00, 0 - 32000, -60 - 1200
(depending on selected units)
11
Lo TrpPt: 12.00mA
Option
Low Trip-point value (Alarm and/or
SD Below this value)
4.00 - 20.00, 0 - 32000, -60 - 1200
(depending on selected units)
12
Hi TrpPt: 18.00mA
Option
High Trip-point value (Alarm and/or
SD Above this value)
4.00 - 20.00, 0 - 32000, -60 - 1200
(depending on selected units)
13
Setpoint 4.00mA
Option
Setpoint for Secondary TMain control
(TC1 & 2 still have priority)
4.00 - 20.00, 0 - 32000, -60 - 1200
(depending on selected units)
14
Deadband 0.00mA
Option
Deadband value for 4-20mA Inputs:
0 - 50 (eg: 0.00mA to 0.50mA, or 0.0 -
5.0%, or 0.0 to 5.0 degrees, etc.)
15
1V-5V 1/2 Calib
Option
1V-5V 1 & 2 Calibration (internal)
Start an internal 1V-5V calibration
As an example for 4-20mA Input setpoint control, if both inputs are set to control Ignitor 1, if either input is below its
corresponding setpoint, it will turn on the TMain 1 solenoid output (an OR operation). Both inputs would have to be above
their setpoints for Ignitor 1 TMain solenoid output to turn off.
AUX1 & AUX2 Relay Settings Menu Options
The AUX1 and AUX2 Relays can be configured in the menu system to switch based on a variety of options. Either relay can
be selected to switch upon reaching the setpoint temperature of any of the three thermocouple inputs, a custom thermocouple
setpoint temperature can be used, the relay can be selected to switch upon one of the Ignitors going into Flame Fail (Alarm), or
the relay may be selected to only turn on upon Modbus control.
As an example, for incinerator systems, an option to turn on external fans once the TC1 temperature reaches 960
°
C may be
desired, but the setpoint temperature for TC1 is set to 980
°
C. In this case, the user would use one set of AUX Relay terminals
to control the 12VDC fan relay coil: set the "Ctrl:" option to "TC1 Custom", and then set the "Cust Temp:" field to 960
°
C.
#
Menu Selections
Type
Description
Possible Options/Values
1
Control:
("Ctrl:")
Option
Control source variable for the
AUX 1/2 Relay
TC1 Ignitor 1 SetPoint,
TC1 Ignitor 2 SetPoint,
TC2 Setpoint,