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.
Figure 38, OEM Paint Sprayer Application
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Process Requirements
Unprotected Parameters
PrOP
AL-1
AL-2
0
12
12
On/Off control
GO light on within setpoint ±12
NO GO light on outside setpoint ±12
SCAL dCPt
FLtr
SHFt
SPLO
SPHI
SPrP
InPt
1 - In Configure Input Parameters tYPE tc-J *
F *
0 *
1 *
0 *
140
150
0.0 *
Thermocouple type “J”
Control and indicate in °F
One degree display resolution
Nominal input signal digital filtering
No shift correction necessary
Limit min. setpoint temperature to 140 °F
Limit max. setpoint temperature to 150 °F
No setpoint ramping
PLOC * User Input program lock
2 - OP Configure Output Parameters
CYCt
OPAC rEv *
OPLO
OPHI
OPFL
OPdP
2 *
0 *
100 *
0 *
CHYS 2 * tcod
3 *
0 *
Not used for On/Off control
Use reverse acting for heating
For on/off, leave at 0%
For on/off, leave at 100%
Turn off if sensor fails
Output power dampening = 3 seconds
2 degree on/off band
Not used for On/Off control rSt1
Stb1
AL-1
Act2 rSt2
Stb2
AL-2
AHYS
4 - AL Configure Alarm Parameters
Act1 b-IN
Auto * no *
12 b-ot
Auto * no *
12
1 *
Band Inside
Automatic light on/off
Power-up standby
Go light on within setpoint ±12
Band outside
Automatic light on/off
Power-up standby
No Go light on outside setpoint ±12
1° alarm activation hysteresis
* Factory Settings
