2 5
TRM138
The instrument operates in one of the following modes: OPERATION, PROGRAMMING,
ADJUSTMENT.
7.1. OPERATION Mode
7.1.1. The OPERATION mode is the basic operational mode which is actuated automatically
in 1…2 sec after energization of the instrument. In this mode TRM138, in accordance with the preset
configuration and parameter values set by the user, performs the following main functions.
7.1.2.
The instrument measures physical properties
monitored by input primary sensing
devices by the algorithm described in Item 3.2.2.
Information displayed on the indicating devices and display channel select modes are
presented in Item 3.4.
Note.
If the channel works in the meter mode, the preset limit value is not displayed on the
DI2
indicating device, and on the
DI4
indicating device two dashes (—) are displayed.
Information displayed on the
DI1
can be presented in the format selected by the user (see
Item 3.2.4.2).
7.1.3.
The instrument controls the operation of primary sensing devices and at fault
of any of them generates “Sensor fault” signal.
On this signal flashing light is actuated in the relevant
“CHANNEL”
LED, the
DI1
displays
a message with the faulty transducer order number (for example, at fault of transducer 5:
d 5
).
The
DI2
displays a message on the fault cause (listed above, in Table 5). The information on the
fault is stored until its cause is eliminated or up to programmed cutoff of the faulty channel.
A more detailed information on emergency mode see in Item 3.2.7.1.
The faulty channel can be disconnected by setting
“0”
value
in the
C.in (PL2)
parameter of the
relevant LU. To reduce total interrogation cycle duration for primary sensing devices, the faulty sensor
connected to this LU is recommended to be disabled by setting
“oFF”
value in the
int (PL1)
parameter.
7.1.4.
The instrument automatically controls the peripherals
by means of LUs and OUs
according to preset parameters. The operator can visually monitor key type OUs’ operation by the
status of the
К1
LED on the front panel of the instrument. The LED’s flashing light indicates switching
the OU to “enabled” status, and the light’s extinction – “disabled” status. This OU’s order number
is displayed on the
DI4
indicating device.
7.1.5.
The instrument allows onstream changing preset limit values for monitored
parameters
. The instrument is switched to preset limit value changing mode on the selected
display channel by momentary depression of the
button, and monitored by way of actuation
of the flashing light on the
DI2 on
indicating device. The preset limit value is changed for one low
order digit by momentary depression
(up) or
(down) buttons. At continued depression (for
2…3 sec) the preset limit value will be changing continuously at increasing rate. The new preset
limit value is recorded in the instrument’s nonvolatile memory by a momentary depression the
button and is indicated by flashing light of the
DI2
indicating device.
The range for onstream change of the preset limit values is set independently for each LU
upward or downward in the
С.SP.o (PL2)
parameter. For example, if a LU’s preset limit value
С.SP
(PL2) = 150°C
and its variation range
С.SP.o (PL2) = 50°C
the operator can change the preset
limit values only within the range of
100…200°C
without switching the instrument to PROGRAMMING
mode.
When
“0”
value is set in the
С.SP.o (PL2)
parameter, onstream change of the preset limit
value is forbidden.
7.1.6.
The instrument allows switching to manual operation
any of inprocess LUs, their
related OUs and peripherals by depressing the buttons arranged on the front panel of the
instrument.
A LU can be switched to manual operation only after switching the display to the static mode
(
“stop”
LED flashing) and under condition that operation in this mode is allowed by setting
“oFF”
value in the
bL.Ar (PL0)
parameter (unlocking).
Section 7
Operation Modes
Содержание TPM138
Страница 23: ...22 TRM138 Setting up Procedures Section 6 Figure 16 Programmed parameters setting diagram...
Страница 24: ...23 TRM138 Section 6 Setting up Procedures...
Страница 30: ...29 TRM138 Appendix 1 Dimensional drawing...
Страница 31: ...30 TRM138 Instrument connection Appendix 2 Figure A2 1 Instrument terminal block contacts arrangement diagram...
Страница 35: ...34 TRM138 Figure A2 10 Example of connection of various type transducers Instrument connection Appendix 2...
