MKS Stabil-Ion 370 Series, Инструкция по эксплуатации, Страница: 24 / 122

2 Initial Setup Procedures
2-4
Series 370 Stabil-Ion Instruction Manual - 370119
2.1.3 Process Control Setup
1. If you do not have process control capability, skip to Section 2.1.4 on page 2-8.
2. Use the catalog number on the rear of the Process Control module together with Figures 2-6
and 2-7 to identify the process control capability installed in your unit.
3. Even if the control logic is simple and obvious, we recommend that you develop a logic
diagram of the process control function.
4. Prepare a specification table which lists the proposed pressure setting, system measurement
point, and relay status for each Process Control setpoint.
5. Draw a circuit schematic which specifies exactly how each piece of system hardware will be
connected to the Process Control relays.
Do not exceed the relay ratings:
NOTE: If the relay contacts are used to switch high currents, the gold plating may be consumed.
This may make the contacts unsuitable for low level signal switching in the future.
6. Attach a copy of the Process Control circuit diagram to this manual for future reference and
troubleshooting.
7. The required process control connections may be made later. See Section 3.6 on page 3-8.
8. If application assistance is desired, please contact an MKS Application Engineer.
It is the installer's responsibility to ensure that the automatic signals
provided by the product are always used in a safe manner. Carefully check
the system programming before switching to automatic operation.
Where an equipment malfunction could cause a hazardous situation, always
provide for fail-safe operation. As an example, in an automatic backfill
operation where a malfunction might cause high internal pressures, provide
an appropriate pressure relief device.
Table 2-1 Relay Ratings
Relay Configuration SPDT (single pole, double throw)
Relay Contact Rating 5 A, 60 Vdc resistive load, 30 V rms (42.4 Vpk)
Relay Contact Type 5 A (gold plated for low level switching)