Watlow Series 945 High/Low Limit Control - Manual (Page 10)

10
WATLOW Series 945 High/Low Limit User's Manual
Setup
Lock: Selects the level of operator lock-out.
Range: 0 - 2
Default: 0
The levels of operator lock-out are defined as follows:
LOC 0: All operating parameters may be viewed or changed.
LOC 1: No calibration offset adjustments permitted.
LOC 2: No adjustments permitted.
Input: Selects the sensor input type. Only those input types which are compat-
ible with your unit will appear. See the model number information for your type.
Range: J, K (appears as H), t, n, c, Pt2, rtd, rt.d, 0-5, 420
Default: t
Decimal: Selects the location of the decimal point for all process related data.
This parameter only appears if the In parameter is 0-5 or 420.
Range: 0, 0.0, 0.00
Default: 0
Celsius _ Fahrenheit: Selects the units of temperature measurement for the
control. This parameter only appears if the In parameter is a thermocouple or
RTD input selection.
Range: C or F Default: F
Range Low: Selects the low limit of the process alarm set point and the devia-
tion alarm target set point. See Table 1 on Page 11 for range values.
Range: Sensor range low to rH
Default: Low limit of sensor type
Range High: Selects the high limit of the process alarm set point and the
deviation alarm target set point. See Table 1 on Page 11 for range values.
Range: Sensor range high to rL
Default: High limit of sensor type
Alarm 2 Type: Determines whether the Alarm 2 Outputs are a process or
deviation alarm. A process alarm is set at an absolute temperature to prevent
over/underrange.
Range: Pr or dE Default: Pr
Latching : Selects whether Alarm 2 Outputs are latching or non-latching.
Latching must be cleared before the alarm output will reset. Non-latching auto-
matically resets the alarm output when the condition clears.
Range: LAt or nLA
Default: LAt
Hysteresis: Selects the switching hysteresis for Alarm 1 and Alarm 2.
Range:
1
°
F - 99
°
F 0.1
°
F - 9.9
°
F Default: 3
°
F
1
°
C - 55
°
C 0.1
°
C - 5.5
°
C
1Unit - 99 Units 0.1 Units - 9.9 Units
RTD: Selects the RTD calibration curve for RTD inputs. This parameter will not
appear unless In = rtd or rt.d. JIS = 0.003916
Ω
/
Ω°
C, DIN = 0.003850
Ω
/
Ω°
C.
Range: din or JIS Default: DIN
Baud: Represents the baud rate the serial communications is running at.
Appears if your 945 has communications.
Range: 300, 600, 1200, 2400, 4800, 9600
Default: 1200
Data: Allows the user to select the data bits and parity for communication. This
parameter will appear if your Series 945 has communications.
Range: 7 o = 7 data bits and odd parity
Default: 7 o
7 E = 7 data bits and even parity
8 n = 8 Data bits and no parity
LOC
NOTE:
In the deviation
mode, rL and rH
only effect the
target set point
values.
In
dEC
C _ F
rL
rH
AtyP
LAt
rtd
HYS
bAUd
dAtA