Watlow Series 922 - Manual (Page 52)

52
WATLOW Series 922 User's Manual How To Program the Series 922, Chapter 6
SETUP Menu
A reset (integral) heating control action for Channel 2 that automati-
cally eliminates offset, or "droop", between point and actual process
temperature in a proportional control. Expressed by repeats per
minute. This parameter will not appear if PB2H is set to 0, or if "T" or
"P" have been selected in TYP under the SPCLFUNC parameter.
Range: 0.00 to 5.00 repeats/minute
Default: 0.00
The rate (derivative) heating function for Channel 2 of the Series 922.
The rate is determined by how fast the error being corrected is
increasing. Expressed in minutes. This parameter will not appear if
PB2H is set to 0.
Range: 0.00 to 5.00 minutes
Default: 0.00
The Channel 2 heating cycle time usually expressed in seconds for a
controller to complete one ON/OFF cycle. Time between successive
turn ons. This parameter will not appear if: Your Series 922 has a 4-
20mA output and OUT2 under the SPCLFUNC menu is set to HTCL,
PB2H is set to 0, or you have selected "T" or "P" (Channel 1 only) in
the TYP parameter under the SPCLFUNC menu.
Range: 1 to 60 seconds
Default: 5
A thermal control band for channel 1 heating, that defines where the
rate (derivative) function begins. This band is in multiples of the heat
proportional band. This parameter will not appear if PB2H is set to 0,
or "T" or "P" (Channel 1 only) in the TYP parameter under the
SPCLFUNC menu have been selected.
Range: 0 to 7 times the PB2H, (0 denotes rate is always functional)
Default: 0
The area for Channel 2 where no heating or cooling takes place in a
heat/cool proportional control. This parameter will not appear if "T" or
"P" (Channel 1 only) have been selected in the TYP parameter under
the SPCLFUNC menu.
Range: -36 to 36
°
F / -20 to 20
°
C / -20 to 20 Units; -3.6 to 3.6
°
F / -
2.0 to 2.0
°
C / -2.0 to 2.0 Units / -20 to 20%RH.
Default: 0
A temperature band expressed in degrees within which a temperature
controller proportioning function is active for Channel 2 cooling. This
parameter will not appear if "T" or "P" (Channel 1 only) have been
selected in the TYP parameter under the SPCLFUNC menu.
Range: 0 to 900
°
F / 0 to 500
°
C / 0 to 500 Units; 0.0 to 90.0
°
F / 0.0
to 50.0
°
C / 0 to 50.0 Units / 0 to 500%RH.
Default: 45
°
F / 25
°
C / 25 Units; 4.5
°
F / 2.8
°
C / 2.5 Units / 25% RH.
Reset (integral) cooling control action for Channel 2 that auto-
matically eliminates offset, or "droop", between set point and actual
process temperature in a proportional control. Expressed in repeats
per minute. This parameter will not appear if PB2C is set to 0, or "T"
or "P" (Channel 1 only) in the TYP parameter under the SPCLFUNC
menu have been selected.
Range: 0.00 to 5.00 repeats/minute
Default: 0.00
The rate (derivative) cooling function for Channel 2 of the Series 922.
The rate is determined by how fast the error being corrected is
increasing. Expressed in minutes. This parameter will not appear if
PB2C is set to 0, or if "T" or "P" (Channel 1 only) in the TYP param-
eter under the SPCLFUNC menu have been selected.
Range: 0.00 to 5.00 minutes
Default: 0.00
RS2C ( )
RS2C ( )
PB2C ( )
DB2 ( )
RB2H ( )
CH2H ( )
RT2H ( )
RS2H ( )