MKS Granville-Phillips Mini-Convectron 275 series, Инструкция по эксплуатации

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Operation
Mini-Convectron Module with RS-485
33
Instruction Manual - 275545
Saf
e
ty Ins
tructions
Introduction
Installatio
n
O
p
e
ra
tion
M
a
inten
ance
Calibration
SH
Set setpoint 2 trip point
Example: From host: #01SH+1.00E-01 CR
From Mini-Convectron:
*
01_PROGM_OK CR
From host: #01SH-2.00E-01 CR
From Mini-Convectron:
*
01_PROGM_OK CR
Notes: The above example will turn on or energize the relay when the pressure is
less than 1.00E-01 TORR, for nitrogen.
The relay will turn off when the pressure goes above 2.00E-01 TORR.
The – value from the host sets the relay OFF point and the + value set the
relay ON point.
The above example turns on the relay below the setpoint.
To turn on the relay above the setpoint, the – value must be lower than the
+ value.
The minimum hysteresis is 10 mV of Convectron bridge voltage. This
corresponds to 10 TORR at atmosphere and 1 mTorr near vacuum. In the
example here, if the host sets the OFF point to -1.01E-01 TORR, the ON
point will automatically change to 9.80E-02. The response will be '
*
01
+MIN HYS'.
SH+ SH- may be set for the same pressure. If this is done, the second SH_
command will determine the relay logic. SH+ sent last will generate a +MIN
HYS response and the relay will energize BELOW the setpoint. SH- sent last
will generate a -MIN HYS response and the relay will energize ABOVE the
setpoint.
SL
Set setpoint 1 trip point
Example: From host: #01SL+1.00E-01 CR
From Mini-Convectron:
*
01_PROGM_OK CR
From host: #01SL-2.00E-01 CR
From Mini-Convectron:
*
01_PROGM_OK CR
Notes: Same function as SH for setpoint 1.
RH
Read setpoint 2 trip point
Example: From host: #01RH+CR
From Mini-Convectron:
*
01_9.80E-02 CR
Notes: RH+ reads setpoint ON value, value begins with a space. RH- reads setpoint
OFF value, value begins with a minus sign.