121-235

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The 121-235 is a servo drive manufactured by Pacific Scientific. Part of the SC750 Servo Drives series, it features programmable inputs with 12 general-purpose and 2 fast options. It supports an analog input range of +12.5 Vdc. The servo drive operates effectively between 0°C to 50°C and weighs 13 lbs.

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Product Description:

The SC750 Servo Drives Series incorporates the versatile Pacific Scientific 121-235 servo drive which is designed for sophisticated motion control within industrial automation systems. This servo drive offers 12 (twelve) general-purpose programmable inputs, 2 (two) fast inputs and two (two) additional flexible configuration options to suit different control schemes. The Pacific Scientific 121-235 provides accurate control by having a +12.5 VDC (Volts Direct Current) analog input range with a maximum 16-bit resolution. In addition, it has 11 (eleven) general purpose programmable outputs and 1 PWM output, enabling this servo drive into sophisticated motion control systems.

This servo drive works from a 90 to 264 VAC (Volts Alternate Current) (47-63 Hz hertz) supply ensuring operability within a wide supported input voltage range. It communicates with industrial networks using RS-232 and RS-422/485 interfaces. This Pacific Scientific servo drive also enhances feedback control precision with an encoder emulation output having a selectable resolution of up to 16,384 PPR.

The Pacific Scientific 121-235 model (weighing 13lbs, SC752 model) is optimized for industrial ambient enclosing with operating temperatures from 0 C to 50 C and 10-90% humidity (non condensing). For long term reliability this servo drive is designed to be stored in extreme -55 C to 70 C temperatures. This Pacific Scientific device operates as an optimal selection for an application involving robotics, automated assembly lines, material handling systems, CNC machinery as well as other systems that require high-speed and highly accurate motion control. Furthermore, this servo motor can be deployed in futuristic factories of the modern economy, such as chips, automobiles, plastic, and hardware.

Analog Input Range
+12.5 Vdc
Analog Input Resolution
16-bit maximum, 12-bit minimum
Analog Output Range
+5 Vdc
Communication Interfaces
RS-232, RS-422/485
Encoder Emulation Output
Selectable resolution up to 16,384 PPR
Humidity Range
10% to 90%, non-condensing
Input Impedance
100 Kohm
Operating Temperature
0o to 50oC
Output Source Impedance
50 ohms
Power Supply
90 to 264 V ac, 47 to 63 Hz
Programmable Inputs
12 general purpose, 2 fast
Programmable Outputs
11 general purpose, 1 PWM
Storage Temperature
-55o to 70oC
Weight
13 lbs (SC752)

Frequently Asked Questions about 121-235:

Q: What is the analog input range of the 121-235?

A: The analog input range is +12.5 VDC, allowing for high-precision signal acquisition.

Q: What is the analog output range of the 121-235?

A: The analog output range is +5 VDC, suitable for control and signal transmission applications.

Q: What are the input and output impedance values of the 121-235?

A: Input impedance: 100 kΩ, ensuring minimal signal loading. Output source impedance: 50 Ω, providing stable signal transmission.

Q: How many programmable inputs does the 121-235 have?

A: The 121-235 includes 12 general-purpose programmable inputs and 2 fast inputs for time-sensitive operations.

Q: How many programmable outputs are available on the 121-235?

A: The device features 11 general-purpose programmable outputs and 1 PWM output for precision control applications.


Internal Product Review

  • ‘‘The 121-235 servo drive functions between 0°C and 50°C and has 12 general-purpose programmable inputs. This 13-pound device, which is part of Pacific Scientific's SC750 Servo Drives line, has RS-232 and RS-422/485 communication interfaces.’’

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