LOGIC MODULES

Variety of Logic Functions
A variety of output logic functions are available to provide increased system flexibility:

Dual-Preset:
Allows for the settings of both ON and OFF setpoints for each channel.

Single-Preset/Fixed One-Shot-Timer:
Upon reaching the ON setpoint, a fixed one-shot-timer (0. 1 -sec.) is activated.

Single-Preset/Variable One-Shot-Timer:
Upon reaching the ON setpoint, a variable one-shot­timer (0.1-6 sec.) is activated and the output stays ON during the preset time.

Single-Preset/Digital Timer:
Upon reaching the ON setpoint the output turns ON and stays ON for a duration set by the time thumb­wheels. Time-base setting is selectable by DIP switches from I ms to 100 ms per count.

ModZ:
Upon external signal, the position reference to the module is reset to zero and the module starts counting up from this new reference, switches output ON at the ON setpoint, and switches OFF at the OFF setpoint. The cycle is repeated by resetting the counter. One M1750­PLS chassis can accommodate up to two ModZ modules with independent reset signals. This function is especially useful for glue applying applications.

SYSTEM EXPANSION

Field- Expandable to Match the Application
The eight- and twelve-channel chassis are standard, but any desired number of logic modules can be inserted to meet the requirements. Also several M1750-PLS chassis can be wired in parallel to achieve a total of 48 channels for one position transducer.

Variety of Plug-in Output Relays
The M1750 PLS is designed to operate with electromechanical relays (10 Amp) or open collector (100 mA. @ 30 V) or solid­state AC (3 A), DC (2 A) or AC/DC (0-35/0-5 A) output modules. Electromechanical relays and solid-state modules, however, cannot be mixed. The solid-state modules are optically isolated. All these relays are plug-in type for easy on-site replacement. The AC/DC relay has less than 0. 1 mA leakage to interface directly to a programmable controller 110 VAC input card.