Automation Technology Concepts
This phase angle controller is the perfect replacement for an
expensive impulse controller and it gives better heater
control. Mounts right on the SSR. The PS1PHRFR is a
microprocessor based phase angle controller.  It mounts on
the input control terminals of a random fire solid state relay
and provides true linear phase angle control of the load. The
output power of the SSR is proportional to the command
input. Perfect for replacing that expensive Panasonic FP
impulse controller.

Applications would include controlling electric strip heaters to
a setpoint with an analog output of a PID controller.  Perfect
for sealer machines or temperature control using electric

Click Here for Datasheet
Click Here for Manual
  • Input: 24 VAC, +/- 15 %  - 65 mA max.  (Provides power and line synchronization)
  • Frequency Range: 47 to 63 Hz
  • Command Inputs: 4-20 mA, 0-20 mA, 0-5 VDC, 0-10 VDC
  • Response Time: 30 mS
  • Linearity: +/- 2%
  • Power Indication: LED output indicator                                 LIST PRICE $70.00
  • Part Number: PS1PHRFR


The  PS1PHRFR  is  a  phase  angle  control  module  designed  for  use  with  standard footprint random  fire SSRs (Solid State Relays). The module mounts directly on
the SSR’s input screws. The module operates by varying the firing point of the SSR’s input. The power delivered  to  the load is proportional to the command input
signal. The PS1PHRFR will not operate correctly with zero cross fired SSRs.

Provides true linear power output phase angle control
Small (1.75x1.40”) module mounts on the input terminals of an inexpensive SSR
Command input accepts 4-20mA, 0-10V, 0-5V, 0-135 kOhm Pot, PWM
Configurable line voltage compensation increases stability of your process
Configurable soft start for high inrush loads
Automatic 50/60Hz operation

Solid State Relay Installation
Make sure that the voltage and current ratings of the Solid   State   Relay  (SSR)  are  sized  correctly  for  the  load, otherwise a hazardous condition such as over-
heating, failure of the  SSR,  fire  or   explosion  may  result. Contact  the  SSR manufacturer for more details.

The SSR must be mounted to a heat sink as per the SSR  manufacturer’s requirements,  otherwise a hazardous condition  such  as  over-heating,  failure  of  the  
SSR,  fire  or explosion  may result. Contact the SSR manufacturer for more details.

Mounting Instructions
The PS1PH mounts directly to the control input terminals of an SSR using two #6-32 screws.  Some relays have short input screws and  longer screws will required to
reach through the contacts on the PS1PH.
Be sure to observe the correct polarity when mounting the module  (module should be positioned over the SSR). The module should sit firmly on top of the SSR when
the screws are tightened.

Electrical Connections
See the WIRING DIAGRAMS at the end of this   document.         Make  sure  the  module ordered        is        the        correct        module        for        the application
before wiring.Before  wiring  the  module  all  Dip  Switch settings  for the command input and special features  should  be  setup  properly  per  the Dipswitch
Configuration Section.
The  terminal  blocks  on  the  sides  of  the PS1PH for connecting 24V Power and the command  signal   can  accept  16-30  AWG wire.

Internal Diagram
Please reference the internal diagram below to be absolutely sure the system wiring will be compatible with the control module.

Power Supply
The PS1PHRFR power requirement is 24V AC +/-15% 47-63Hz.        The module will not operate from a 24VDC power supply since it relies on the 24VAC supply for
synchronization to the AC  line.

Power Fusing
Fusing may be accomplished by fusing each module separately or fusing groups of the modules with either primary or secondary fusing.  The current draw of each
PS1PHRFR is 65mA max.

Command Input
The PS1PHRFR can accept 4-20mA, 0-10V, 0-5V, and potentiometer and PWM inputs. All command inputs are not isolated from the 24VAC power Input.  The type of
command input can be configured via the dip switch.  The default setting is 0-5V/ potentiometer.
When wiring multiple PS1PHRFR’s together, follow the guidelines in the Wiring Multiple
PS1PHRFRs section.
When 4-20mA is selected via the dipswitch, a 249 Ohm shunt resistor is present at the command input between the 0V and IN terminals.  Be sure not to exceed
20mA DC on the input as damage to the unit may result.  If the command input is wired to a 0-20mA or
4-20mA output of another device, the 0V terminal must remain at the same potential as the negative lead of the current output from the other device, otherwise
damage to the PS1PHRFR may result.

PWM Command Input
The PS1PHRFR’s PWM Command input is designed to accept a signal from a PLC or a process/temperature controller’s SSR drive output.
•This•logic•signal•is•used•generate•a command setpoint.  The PS1PHRFR can accept logic signals with cycle times ranging from 0.1 to 6 seconds and logic voltages
from 5-30VDC.

Input Fail-safe Protection
If the signal sent to the PS1PHRFR’s•command•input•should•become•electrically•open•the control output will be forced to an off state.

Line Voltage Compensation
The PS1PHRFR’s•line•voltage•compensation•keeps•the•power•constant•on•the•load•as the line voltage changes.  The line voltage is measured via the 24VAC
power applied to the PS1PHRFR module. To use  the line voltage compensation feature properly, the
24VAC power transformer should be fed from the same mains as the load circuit to be controlled  as  per  the  wiring  diagrams  at  the  end  of  this  document.        
Line  voltage compensation can be enabled or disabled using the configuration dipswitch.  The default setting is enabled (switch # 6 is OFF).  To disable the Line
Voltage Compensation, set switch # 6 to the ON position.

Soft Start
The soft start feature ramps up to the command value over a period of approximately 20 seconds.  The soft start time resets if the command value goes to zero (less
than 4% of the input range) or power is cycled.  Soft start is useful on high inrush heaters such as Quartz, Molybdenum, Tungsten, or Graphite heaters.
Soft Start can be set on or off using the configuration dipswitch. The default setting is off. Soft Start Times below 20 seconds are available and can be ordered by
adding a –XSS to the ordering code where X is the time in seconds.

Configuration Dipswitch
The  configuration  dipswitch  is  used  for  setting  up  the  command  input,  line  voltage compensation and soft.  Using a pen point gently push the switch up for on
and down for off according to the setup outlined in the table below.

Command Input        1              2             3              5
0-5V (Default)         OFF        OFF        OFF        OFF
Potentiometer         OFF        OFF        OFF        OFF
0-10V                      OFF        OFF        ON          OFF
4-20mA                   OFF        ON          OFF         ON
1-5V                        OFF        OFF        OFF        ON
2-10V                      OFF        OFF        ON          ON

Control Output
The PS1PHRFR SSR output drive is a DC pulsed current limited 10V/15mA (nominal) drive signal.   This is more than enough current for driving most 3-32V standard
SSRs, however it is still important to review the data sheet for the SSR you would like to use for compatibility with the PS1PHRFR’s• output• drive.•  The• control•
output• can• tolerate• a momentary• direct• short.•        The• following• graph• will• allow• you• to• verify• the• SSR’s compatibility with the PS1PHRFR over wide
input voltage variations.

Output LED
The PS1PHRFR’s•RED•output•LED•will•turn•on•when•the•output•is•on•and•increase•in
intensity as the power output is increased.  Because the drive signal varies considerably to give linear power output, the LED should only be used as a rough
indication of SSR Drive• and• not• actual• power• output.• The• output• LED• is• wired• in• series• with• the• SSR’s input.        If there is a poor connection on the
SSR  input terminals or a problem with the SSR’s•Input,•the•output•LED will not become energized.

Three Phase Operation
Three PS1PHRFR’s can be used to control three poles of a three phase load for inside delta or grounded wye configurations. The Module should be wired as shown in
the wiring diagrams, using one transformer for each leg to be controlled.

Three Phase Special Wiring Considerations
The PS1PHRFR derives its AC synchronization from the applied 24VAC power.  Each
24VAC•transformer’s•primary•must•be•connected•to•the•corresponding•leg•power•to•be controlled by each PS1PHRFR.

Three Phase Wiring of Command Inputs
The command inputs should be connected in parallel if 0-5V or 0-10V is selected and in series if 4-20mA is selected.

Wiring Multiple Units in Single Phase Applications
If more than one PS1PHRFR is to be used from a non-isolated or common command signals:
A common power transformer can be shared.  If the input selected is 0-10V or 0-
5V, the inputs should be wired in parallel.
If multiple units must be powered from one power transformer and 4-20mA input is selected, one module should be set for 4-20mA and the remaining modules should
be set for 1-5V.
If the command is 4-20mA, and the command inputs are to be wired in series, a separate power transformer for each module is required to isolate the inputs.

Connecting Power & Commands In Parallel
When multiple PS1PHRFR power inputs and commands are wired in parallel, all of the
0V terminals must be connected together follows: Power:        Command:
0V-----0V-----0V----->        0V-----0V-----0V----->
24V---24V---24V---->        IN------IN-----IN------>
No crossing of the power input feed or command signal is permitted.  If for some reason the power should become crossed, it will cause a direct short in the system.  
If properly fused, the fuse will blow and the PS1PHRFR will not be damaged.  If the command inputs are wired improperly, damage to PS1PHRFR can result.
We do not guarantee operation of the PS1PHRFR with any other manufacturer's SSR control  module.        Using  them  in  the  same  circuit  may  cause  either  
module  to  be damaged.

Electrical Specifications
Command Inputs;  4-20mA, 0-10V, 0-5V, 0-135, Pot, PWM Input Impedance 10K (0-10V), 250 (4-20mA), 100K  (0-5V) 0-135 Excitation Current 13mA max
Control Output; SSR Drive, DC pulse, nominally 10V at 15mA Response Time 100mS
PWM Input Period Range   1-5 Seconds PWM Input Level  5-30VDC Output Linearity +/-2%
External Potentiometer Res. 10K  -25K
Line Voltage Comp. Range  +15%/-15% up to 100% output
Regulation 2%
Soft Start Period 20 Seconds to reach 100% output Voltage Limit Range 5-100% of max load voltage. Ambient Temperature Range 0 to 70 °C
Power Supply Voltage        24VAC +15/-15%
Power Consumption        65mA (Power consumption 1.6W MAX) Line Frequency Range 47-63 Hz
Terminal Block wire Gauge 16-30 AWG
Terminal Block Material Polyamide 6.6 UL 94 V-0, Black

Mechanical Dimensions
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LIST PRICE    $70.00