ES-4890 Rev.1

PSP10

ELECTRONIC ACTUATOR

STEP-TOP ELECTRONIC ACTUATOR

(Linear type with Auto-setup function; Modbus communication)
Functions & Features
• Equipped stepping motor for drive motor.
• High-speed operation control (1/1000 high resolution)
• Auto set-up
• Both Modbus-RTU communication and analog signal can use
• USB (CONFIG-Type-C), PU-2x jack, and DIP switches
• Disc spring with buffer for both upper/lower end incorporated
• Equipped terminal box standardly (LEDs can be visually checked from outside)
Typical Applications
• Actuator for automatic control valve in various plants and industries
• Electronic actuator for fuel cell system and refrigerating machines
 

MODEL: PSP10–[1][2][3]–[4]CR[5]

ORDERING INFORMATION

• Code number: PSP10-[1][2][3]-[4]CR[5]
Specify a code from below for each of [1] through [5].
  (e.g. PSP10-A1A-ACR/Q)
• Specify the specification for option code /Q
  (e.g. /C03/SET)

OUTPUT STEM OPERATION DISTANCE

40mm [1.57”] (adjustable to 20mm [.79”])
Max. stroke ≤ 40.0mm [1.57”]

[1] OPERATION TIME, THRUST, THRUST AT LOCK

[2] OUTPUT STEM TYPE

1: M14 male screw, pitch 1.5 (fine screw)
2: Stem button

[3] INPUT

Current
A: 4 – 20 mA DC (Input resistance 250 Ω)
Voltage
6: 1 – 5 V DC (Input resistance 200 kΩ min.)

[4] OUTPUT

Current
A: 4 – 20 mA DC (Load resistance 300 Ω max.)
Voltage
6: 1 – 5 V DC (Load resistance 5 kΩ min.)

CE & UKCA MARKING

C: With

POWER SUPPLY VOLTAGE

DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

[5] OPTIONS

blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to our web site.)
/C03: Rubber coating
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
 (No. ESU-4890)

RELATED PRODUCTS

• PC configurator software (model: STCFG)
• Programming Unit (model: PU-2x)

GENERAL SPECIFICATIONS

Degree of protection: IP66
Action: "Reverse" action (switchable with DIP switch to "direct" action.)
Operation at low input:
(selectable with DIP switches)
· Move downward
· Move upward
· Stop
Low input signal level
· Current input: ≤ 1.48 (±0.2) mA DC
· Voltage input: ≤ 0.37 (±0.05) V DC
Wiring conduits: G 1/2 female thread and G 3/4 female thread (total four)
Terminal block: 7.62 mm pitch; M3 screw terminals (torque 0.5 N·m)
Screw terminal: Nickel-plated brass (not magnet)
Housing material: Diecast aluminum (ADC12)
Coating: Thermosetting acrylic resin
Coating: Silver color
Drive: Stepping motor
Insulation class: E
Position detection: Conductive potentiometer
Deadband adjustment: 0.1 – 0.5 % (1/1000 to 1/200)
Restart limiting timer adjustment: 0.1 – 5.0 sec.
Isolation: Power voltage or I/O signal to retract/UP signal position to extend/DOWN signal position to alarm signal to Modbus communication to metallic housing
Protective functions
· Automatically stops when thrust at lock (abnormal thrust increase)
· Automatically stops when surface temperature of the stepping motor is over 100°C (212°F)  and automatically restarts under 95°C (203°F).
· Automatically heats to +2°C (35.6°F) when surface temperature is under 0°C (32°F).  The motor continues to run.
Status Indicator LED
· POWER: Green LED turns on when the power voltage is ON
· INPUT: Green LED turns on with normal input signal
· AUTO-SETUP: Green LED blinks while auto-setup
· MOVING UP/CCW: Green LED turns on while moving upward
· MOVING DOWN/CW: Green LED turns on while moving downward
· COM: Green LED turns ON while Modbus communication
· ALARM: Red LED turns ON or blinks when abnormal operation
(For details, refer to users manual)
User-configurable items:
Configurable with DIP switch
· Stem operation at low input
· Switching direct/reverse
· Switching signal output
· Set full-open (upper-end) position
· Set full-closed (lower-end) position
· Auto-setup
Configurable with PC or PU-2x
· Set full-open (upper-end) position
· Set full-closed (lower-end) position
· Deadband
· Restart limiting timer
· Retract/UP signal position
· Extend/DOWN signal position
· Operation speed
· Auto-setup (start/cancel)
  Upper side contraction (distance)
  Lower side contraction (distance)
· Specified stroke distance
Configurable with Modbus communication
· Input
· Node address
· Baud rate
· Parity bit
· Stop bit length
· Internal terminating resistor
· Loss of Modbus communication detection time
Action: Switching range of reverse/direct (following table)
· Increasing input signal, output stem moves upward (reverse)
· Increasing input signal, output stem moves downwards (direct)

MODBUS COMMUNICATION

Communication: Half-duplex, asynchronous, no procedure
Standard: TIA/EIA-485-A compatible
Transmission distance: 500 meters max.
Baud rate: 4800, 9600, 19200, 38400 bps
                (ex-factory setting: 38400 bps)
Protocol: Modbus RTU
Node address: 1 to 247 (ex-factory setting: 1)
Parity: None, Odd, Even
Stop bit: 1, 2
Max. number of nodes: 31 (excluding master)
Transmission media: Shielded twisted-pair cable (CPEV-S 0.9 dia.)
Internal terminating resistor: 120 Ω

OUTPUT SPECIFICATIONS

■ Output signal
• 4-20 mA DC or 20-4 mA DC (non-isolated)
  Load resistance: 300 Ω max.
• 1-5 V DC or 5-1 V DC (non-isolated)
  Load resistance: 5 kΩ min.
■ Alarm output (triggered when the output stem is locked)
• Output type: Photo MOSFET relay
• Rated load: 160 V 150 mA AC/DC at peak 
• ON resistance: 8 Ω max. 
• Leakage current during opening/closing: 2 μA max. 

STROKE RATE

Duty cycle = Within 50 %
The unit must operate at an average duty cycle of 50% (ratio of operating time to standby time) or less.
Operation rate: Less than 13 strokes / min. (excepting momentary peak stroke rate)

INSTALLATION (POWER VOLTAGE: @ 24 V DC)

Standby current value: 0.12 A (25℃at)
Current at no load: 3.3 A (25℃at)
Current at load: 3.3 A (25℃at)
Locked rotor current: 3.3 A (25℃at)
Current in standby or non-operating state at - 25°C: 1 A
Current at no load at - 25°C: 4.2 A
Operating temperature: -25 to +66°C (5 to 150.8°F) (No direct sunlight, radiant heat or heat transfer.)
Storage temperature: -29 to +70°C (-20.2 to 158°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Vibration resistance:
• Sweep endurance test (IEC 61298-3 compliant)
• Acceleration: 19.6 m/s2 (2 G)
• Frequency: 10 to 1000 Hz
• Cycle: 20 cycles
• Sweep rate: 1 oct./min.
• Testing time: approx. 4 hr. 30 min.
• Direction: X, Y, Z
Mounting orientation:
DO NOT mount upside-down
Weight: Approx. 6.3 kg (13.9 lb)

PERFORMANCE

Resolution: 0.04 mm (1/1000 at 40 mm setting)
Hysteresis: 0.6%
Linear characteristic: 0.6%
Backlash: 0.2 mm
Insulation resistance: ≥ 100 MΩ with 500 V DC
(Power voltage or I/O signal to retract/UP signal to extend/DOWN signal to alarm signal to  Modbus communication to metallic housing)
Dielectric strength: 500 V AC @ 1 minute (or 600 V AC @ 1 second) 
(Power voltage or I/O signal to retract/UP signal to extend/DOWN signal to alarm signal to communication to metallic housing)

STANDARDS & APPROVALS

■ EU conformity (CE marking)
•EMC Directive  
    EMI EN 61000-6-4
    EMS EN 61000-6-2
RoHS Directive
    EN IEC 63000
■ UK conformity (UKCA marking)
  The UK legislations and designated standards equivalent
  to the applicable EU directives.

TERMINOLOGY

• Auto-setup Function
A function that automatically set the position that keeps constant thrust load at lower-end (closed) and upper-end (open) with a single operation.
Auto-setup can be performed by following 3 types: Switching DIP SW, PU-2x, and PC configurator software (USB-Type-C).
Even if a leak occurs, the closed position can be changed in 0.1 mm.

• Modbus communication
Operation status of the actuator can be monitored during normal operation for ensuring safe operation of the product and supporting equipment maintenance.
Via Modbus communication, the following data can be monitored to grasp the operation status of the actuator.
- No. of times of start actions of the stepping motor
- No. of times of reverse actions of the stepping motor
- Accumulated operating time of the stepping motor
- Accumulated operation distance of the output stem
- No. of times of restart when an excessive thrust error occurs
- Excessive thrust error

•Excessive thrust monitoring
Function to stop the stepping motor when an excessive thrust is detected. Specifically, the unit constantly monitors the position of the output stem while the stepping motor is driven. When the unit detects that the output stem is not following the position detecting value of the potentiometer, tries to operate with max value of set thrust. If the output stem does not follow the motor after two times, an error of excessive thrust occurs and the stepping motor is stopped (alarm signal).  To release the alarm signal, turn off the power voltage.

• Deadband
Linear resolution

• Hysteresis
The output stem reciprocates i.e. moves up and down according to the input signal.
Hysteresis is the difference between the two curves of ascending and descending directions, which is expressed in percentage.

• Linear Characteristics
The output stem reciprocates i.e. moves up and down according to the input signal. In theory, the output stem moves by a distance proportional to the input signal. In the case of PSP, the difference between the theoretical value and the actual distance that the output stem actually moved is expressed in percentage.

• Restart Limiting Timer
This function prevents the output stem operates frequently when the input signal is unstable.
To prevent the output stem operates frequently, it does not operate at the moment the input signal changes, but after a set period of time.

• Thrust buffering spring
Thrust buffering spring is incorporated in the unit (output stem position).
Disc springs are used for thrust buffering spring.
Elasticity of the springs buffer thrust that affects to the valve stem.
When the operation is stopped, the spring reaction force keeps the thrust that pushes the valve stem up.

• Output stem operation distance
Maximum stroke is 40 mm. (impossible to set over 40 mm)
Minimum stroke is adjustable to 20 mm.
The valve closing position is basically set automatically by the auto-setup function.  No fine adjustment of the valve seat stop position is required.

TERMINAL CONNECTIONS

COMMUNICATION CABLE CONNECTIONS

EXTERNAL DIMENSIONS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM