PTHF Series Timer - Percentage Features

Timer - Percentage
PTHF Series
The PTHF Series can be used for a variety
of applications from chemical metering, to
temperature regulating, to energy management.
The infinite adjustability from 1 to 99% provides
accurate percentage on control over a wide
factory fixed cycle period. When mounted on a
metal surface, it can be used to drive solenoids,
contactors, relays, or lamps, up to 20A steady,
200A inrush. PTHF is the suggested replacement
for the PT Series.
Operation (Percentage):
Upon application of input voltage, the output energizes
and the T1 ON time begins. At the end of the ON time,
the output de-energizes and the T2 OFF time begins. At
the end of the OFF time, the output energizes and the cycle
repeats as long as input voltage is applied. Increasing the
ON time decreases the OFF time. The total cycle period is
equal to the ON time plus the OFF time. The total cycle
period is factory fixed. ON time range is 1 to 99 percent
of cycle period.
Reset: Removing input voltage resets the output and
time delays, and returns the sequence to the T1 ON time.
Connection:
L1
N/L2
For more information see:
Appendix A, pages 156-164 for function descriptions
and diagrams .
Appendix B, page 165, Figure 4 for dimensional drawing.
Features
• ON/OFF recycling percentage control
• Controls loads up to 20A, 200A inrush
• Fixed cycle period 10s - 1000m
• ±0.5% repeat accuracy
• ±5% factory calibration
• Totally solid state & encapsulated
• Onboard or external adjustment 1 - 99% ON
Approvals:
Auxiliary Products:
• External ad just potentiometer:
P/N: P1004-95
• Female quick connect:
P/N: P1015-13 (AWG 10/12)
P/N: P1015-64 (AWG 14/16)
• Quick connect t o s crew ad aptor:
P/N: P1015-18
• Versa-knob: P/N: P0700-7
Available Models:
PTHF410C
PTHF410CK
PTHF4120D
PTHF615A
If desired part number is not listed, please call us to
see if it is technically possible to build .
RT = 100 KΩ
S1 = Optional Low Current Initiate Switch
T1 = ON Time
T2 = OFF Time
RT is used when external adjustment is ordered.
Order Table:
PTHF
X
Input Voltage
─2 - 24VAC
─4 - 120VAC
─6 - 230VAC
X
Fixed Cycle Period
─Specify 10 - 1000 as
the total fixed cycle
period in seconds .
If cycle period is in
minutes insert (M)
suffix.
X
Output Rating
─A - 6A
─B - 10A
─C - 20A
─D - 1A
X
Adjustment
─Blank - External adjust
─K - Onboard adjust
Specifications
Time Delay
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .External or onboard knob
Range / External Adjustment Resistance . . . . . .Adjustable from 1 - 99% / RT = 100 KΩ
Cycle Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fixed from 10s - 1000m
Repeat Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.5% or 20ms, whichever is greater
Cycle Period Tolerance (Factory Calibration) . . .≤ ± 5%
Reset Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .≤ 150ms
Time Delay vs Temp. & Voltage . . . . . . . . . . . . . .≤ ±10%
Input
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24, 120, or 230VAC
Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±20%
AC Line Frequency . . . . . . . . . . . . . . . . . . . . . . . . .50/60 Hz
Power Consumption . . . . . . . . . . . . . . . . . . . . . . . .≤ 2VA
Output
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Solid state
Maximum Load Currents
Output
Steady State
Inrush*
Minimum
A
6A
60A
100mA
B
10A
100A
100mA
C
20A
200A
100mA
D
1A
10A
--
92
Voltage Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .≅ 2.5V at rated current
OFF State Leakage Current . . . . . . . . . . . . . . . . . .≅ 5mA @ 230VAC
Protection
Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Encapsulated
Dielectric Breakdown . . . . . . . . . . . . . . . . . . . . . . .≥ 2000V RMS terminals to mounting surface
Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . . .≥ 100 MΩ
Mechanical
Mounting * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Surface mount with one #10 (M5 x 0.8) screw
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 x 2 x 1.51 in. (50.8 x 50.8 x 38.4 mm)
Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.25 in. (6.35 mm) male quick connect terminals
Environmental
Operating / Storage Temperature . . . . . . . . . . . .-40° to 60°C / -40° to 85°C
Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95% relative, non-condensing
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1A unit: ≅ 2.4 oz (68 g);
6, 10, 20A units: ≅ 3.9 oz (111 g)
*Units rated ≥ 6A must be bolted to a metal surface using the included heat sink compound.
The maximum mounting surface temperature is 90°C. Inrush: Non-repetitive for 16ms.
www.ssac.com • 800-843-8848 • fax: 605-348-5685
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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