NIVELCO Nivotrack MI-5 Series, Руководство пользователя и программирования

Страница: 13 / 16

mia505en2102p

13 / 16
4.1. WIRING
This transmitter is designed to operate on 12.5…36 V DC power only.
The measured voltage on the terminals of the unit should be at least 12.5 V. Using transmitter with HART
®
a terminal resistance
with a minimum value of 250 Ω should be applied.
CAUTION ! the enclosure of the transmitter should be grounded. Grounding resistance should be R

1 Ω . Shielding of the
interconnecting cable should be grounded at the control room side. To avoid disturbing noises the interconnecting cable must not
be led near to high voltage cables. Especially critical are inductive couplings of AC harmonics against which the protection of
shielding is not effective.
5. PROGRAMMING
LED display:
 continuously lit: normal operation
 off, 1 brief flash: no echo
 off, 2 short flashes: excitation signal generation error
 off, 3 short flashes: current generator fault, current output does not match device set program
 lit, 1 short-term non-lighting: saturation
Parameters can set using a HART ® modem, EView2, or PACTware™ program or MultiCONT process controller.
Parameters are entered as 4 place value decimal numbers for the parameters where it's indicated. Indication of each place value ’ d c b a ’ , unused place
values in the description: (-). The instrument ignores unused place values.
P0: - c b -: Measuring unit, Dimension of the measuring unit
Parameter: P0:c , Measuring unit
Description: This should be configured as the first step of the programming. Here you can choose the default unit system:
• c = 0: EU – European unit system
• c = 1: US – Anglo-Saxon unit system
Default measuring unit system: c = 0: EU
Parameter: P0: b , Dimension of the measuring unit
Description: The dimension of the unit can be specified in this menu:
• EU European unit system: b = 0: m; b = 1: cm; b = 2: mm
• US Anglo-Saxon unit system: b = 0: ft; b = 1: inch
Default measuring unit: b = 2: mm
ATTENTION! If the unit system or measuring unit is changed, after a warning message the device resets all the parameters.