Watlow Series 945, 1/4 DIN Microprocessor-BasedAuto-tuning Control - Manual (Page 16)

Setup, Chapter 4 16
WATLOW Series 945 User's Manual
Setup
AL1
Alarm 1: Determines whether the alarm type for Alarm 1 is process, deviation, or
none. A process alarm is set at an absolute temperature. A deviation alarm follows
or tracks the set point. This parameter only appears if your unit has alarms.
Range: Pr, dE, no Default: Pr
Latching 1: Selects whether Alarm 1 is latching or non-latching. Latching alarms
must be cleared before the alarm output will reset. Non-latching automatically resets
the alarm output when the condition clears. This parameter will not appear if AL 1 =
no, or your unit does not have alarms. Range: LAt or nLA Default: nLA
Hysteresis 3: Selects the switching hysteresis for Alarm 1. Appears if
your unit has alarms and AL 1 = Pr or dE.
Range:
1°F - 99°F 0.1°F - 9.9°F Default: 3°F
1°C - 55°C 0.1°C - 5.5°C
1 Unit - 99 Units 0.1 Unit - 9.9 Units
Output 4: Selects Output 4 as retransmit of Process (PrOC) or Set Point (StPt).
Hardware must be present. Scaling of the retransmit output is determined by rL and
rH.
Range: PrOC, StPt, no Default: PrOC
Alarm 2: Determines whether Alarm 2 type is process, deviation, or none. A process
alarm is set at an absolute temperature. A deviation alarm follows or tracks the set
point. This only appears if your unit has alarms.
Range: Pr, dE, no
Default: Pr
Latching 2: Selects whether Alarm 2 is latching or non-latching. Latching alarms
must be cleared before the alarm output will reset. Non-latching automatically resets
the alarm output when the condition clears. Will not appear if your unit does not have
alarms or AL2 = no. Range: LAt or nLA Default: nLA
Hysteresis 4: Selects the switching hysteresis for Alarm 2. Appears if
your unit has alarms and AL 2 = Pr or dE.
Range:
1°F - 99°F 0.1°F - 9.9°F Default: 3°F
1°C - 55°C 0.1°C - 5.5°C
1 Unit - 99 Units 0.1 Unit - 9.9 Units
Silencing: Selects alarm silencing (inhibit) for Alarm 1. This parameter only appears
when AL1 = dE. For more information see Chapter 5.
Range: On or OFF
Default: OFF
RTD: Selects the RTD calibration curve for RTD inputs. Appears if In = rtd or rt.d.
JIS = 0.003916
Ω
/
Ω
°C, DIN = 0.003850
Ω
/
Ω
°C.
Range: din or JIS Default: din
Any parameters that appear after RTD are related to data communications. See How
to Use Data Communications with the Watlow Series 945 for more information.
LAt1
HYS3
Ot4
AL2
LAt2
HYS4
SIL
rtd
Input Type Sensor Range Low Sensor Range High
J 32°F/0°C 1382°F/750°C
K (appears as H) -328°F/-200°C 2282°F/1250°C
t -328°F/-200°C 662°F/350°C
n 32°F/0°C 2282°F/1250°C
c 797°F/425°C 4200°F/2315°C
Pt2 32°F/0°C 2543°F/1395°C
r 32°F/0°C 2642°F/1450°C
S 32°F/0°C 2642°F/1450°C
b 1598°F/870°C 3092°F/1700°C
rtd (1°) -328°F/-200°C 1112°F/600°C
rt.d (0.1°) -99.9°F/-99.9°C 392.0°F/200.0°C
0-5 (VDC) -5.00/-50.0/-500 35.00/350.0/3500
420 (mA) -5.00/-50.0/-500 35.00/350.0/3500
Table 1 -
Input Ranges.