APPLICATION EXAMPLES
T48 OEM Paint Sprayer Application
An OEM manufacturing spray painting equipment utilizes the T48 to
maintain optimum paint temperature. In addition to the low cost, the 1/16 DIN
package size permits the OEM to design temperature control into various
sized painting equipment, from small hand sprayers to large paint booths. The
heating element used to heat the paint, is connected to the Main Control
Output (OP1) programmed for On/Off control. Alarm 1 is programmed as
Band Inside Acting, so that as long as the paint temperature is within
manufacturer’s specifications for temperature, the “GO” light is on. Alarm 2
is programmed as Band Outside acting so that the “NO GO” light is lit when
the paint temperature is more than 12°outside the manufacturer’s
specifications of 140 to 150°F.
Process Requirements
Unprotected Parameters
PrOP 0 On/Off control
AL-1 12 GO light on within setpoint ±12
AL-2 12 NO GO light on outside setpoint ±12
1 - In Configure Input Parameters
tYPE tc-J * Thermocouple type “J”
SCAL F * Control and indicate in °F
dCPt 0 * One degree display resolution
FLtr 1 * Nominal input signal digital filtering
SHFt 0 * No shift correction necessary
SPLO 140 Limit min. setpoint temperature to 140 °F
SPHI 150 Limit max. setpoint temperature to 150 °F
SPrP 0.0 * No setpoint ramping
InPt PLOC * User Input program lock
2 - OP Configure Output Parameters
CYCt 2 * Not used for On/Off control
OPAC rEv * Use reverse acting for heating
OPLO 0 * For on/off, leave at 0%
OPHI 100 * For on/off, leave at 100%
OPFL 0 * Turn off if sensor fails
OPdP 3 * Output power dampening = 3 seconds
CHYS 2 * 2 degree on/off band
tcod 0 * Not used for On/Off control
4 - AL Configure Alarm Parameters
Act1 b-IN Band Inside
rSt1
Auto * Automatic light on/off
Stb1 no * Power-up standby
AL-1 12 Go light on within setpoint ±12
Act2 b-ot Band outside
rSt2
Auto * Automatic light on/off
Stb2 no * Power-up standby
AL-2 12 No Go light on outside setpoint ±12
AHYS 1 * 1° alarm activation hysteresis
* Factory Settings
-66-
Figure 38, OEM Paint Sprayer Application
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