User`s manual

WATLOW DIN-A-MITE Style C User's Manual
5
Output Rating Curves
051015 20 25 30 35 40 45 50 55 60 65 70 75 80
25
30
35
40
45
50
55
60
65
70
75
80
90
85
Current (Amps) into a Resistive Load
Maximum Internal Enclosure Ambient Temperature (°C)
DIN-A-MITE Style C Ratings at 100% On
Natural Convection
3-phase, 3-leg
3-phase, 2-leg
Single-phase
051015 20 25 30 35 40 45 50 55 60 65 70
25
30
35
40
45
50
55
60
65
70
Current (Amps) into a Resistive Load
Maximum Internal Enclosure Ambient Temperature (°C)
DIN-A-MITE Style C Ratings at 100% On
75 80 85 90
Fan-Cooled
75
80
3-phase, 3-leg
3-phase, 2-leg
Single-phase
Extended Heater And SCR Life
With Variable Time Base
Models: DC _ _ -[02, 24, 60] [F0, F1]- _ _ _ _
20% Power, 3 AC line cycles on, 12 cycles off
50% Power, 3 AC line cycles on, 3 cycles off
Phase Angle
Single-Cycle Variable Time Base
With single-cycle variable time base (VTBS)
control, at 50% power, power is on one cycle, and
off one cycle. At 25%, it is on for one cycle and
off for three. Under 50%, the unit is not on for
more than one consecutive cycle. Over 50%, the
unit is not off for more than one consecutive
cycle. This model will work with a linear voltage
input, a 4 to 20 mA input or a potentiometer
input.
Phase angle control (control Type P) is infinitely
variable inside the sine wave. This provides a
variable voltage and/or current output. This
option includes soft start and line voltage
compensation. This model will work with a linear
voltage input, a linear current source input or a
potentiometer input. This is single-phase only.
Alarms not available on phase angle models.
Models: DC _ _ - _ _ S _ - _ _ _ _
25% Power, 1 AC line cycle on, 3 cycles off
Models: DC1 _ - _ _ [L, P] _ - 0 _ _ _
With variable time base control, the power
controller automatically adjusts the time base
and output power with respect to process input.
Accelerated life testing verified that the variable
time base control significantly reduces
expansion and contraction of the heater element.
This extends heater and SCR life while
improving the process temperature control. You
save money on heaters, down time and
maintenance.
50% Power, 1 AC line cycle on, 1 cycle off
∫
6
051015 20 25 30 35 40 45 50 55 60 65 70
Current (Amps) into a Resistive Load
25
30
35
40
45
50
55
60
65
70
75
80
Ambient Air Around Heatsink Fins ( C)
DIN-A-MITE Style C Ratings at 100% On
Through-Wall Heatsink
75 80
Recommended maximum
enclosure temperature is 80 C (176 F)
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