SSI America user manual M4557 Model 9210 Nitriding Controller

M4557 - Model 9210 Nitriding Controller

LOW_PO This opcode is used to enable a low limit alarm on the temperature percent output and/or the atmosphere percent output. The temperature data is the low limit point for the temperature percent output. The atmosphere data is the low limit point for the atmosphere percent output. This alarm remains active until the program ends.

MV_INQ The millivolt inquiry is used to wait for the probe millivolts to reach the value specified in the atmosphere data.

The options are:

•wait, reach within band;

•wait up, reach or exceed the value;

•or wait down, reach or be less than the value.

The LIMIT opcode immediately following this opcode sets a time limit on the wait.

A BRANCH opcode immediately following this opcode can be used to change the program flow based on the inquiry results.

PID_SEL This opcode is used to assign a different set of PID parameters to Loop 1, Loop 2 or Loop 3. The temperature data is the Alternate PID set to be used for Loop 2. The atmosphere data is the Alternate PID set to be used for Loop 1. The option data is the Alternate PID set to be used for Loop 3. The PID parameters selected remain active until the recipe selects a different set of PID parameters to use. Setting a value of –1 for each loop will cause the 9210 to use the PID Setup parameters listed under the PID Setup Menu.

PO_INQ The percent output inquiry is used to test the actual percent output of the temperature and/or atmosphere controller.

The options are:

•wait, reach within band;

•wait up, reach or exceed the specified value;

•or wait down, reach or be less than the specified value.

The LIMIT opcode immediately following this opcode sets a time limit on the wait.

A BRANCH opcode immediately following this opcode can be used to change the program flow based on the inquiry results.

QTCSET This is the Quench Instrument Setpoint opcode. This will allow the user to set the setpoint for a quench cycle. The temperature data is the temperature setpoint.

QUENCH The QUENCH opcode is used to start a quench cycle. The quench cycle is independent of any program that is running. The temperature data is the quench temperature controller set point. The atmosphere data is the quench time in minutes. The option data can be used to control the agitator speed, high or low, by event #6. Event #6 OFF equals low speed, and Event #6 ON equals high speed. The quench temperature controller must be Aux Instrument # 4. The quench cycle starts when the opcode is executed. The setpoint is sent to the quench temperature controller, the timer is started, and the high-speed event is turned on if it is selected. When the quench timer times out, the end of quench cycle (event #7) is turned on for one second and the high speed event is turned off.

NOTE: Not used with Nitrider Application

RAMP This opcode changes the temperature setpoint and/or the atmosphere setpoint linearly over time. The option data is the total ramp time in hours and minutes. The temperature data specifies the final setpoint for the temperature setpoint. The atmosphere data specifies the final value for the atmosphere setpoint.

SSi Manual SERIES 9210-M4557-Nitriding Page 45 of 45