HONEYWELL CC-PAIX01

Description

Function
The LLMUX IOP module supports up to 64 channels of temperature inputs. Low level inputs use the Honeywell PMIO
LLMUX FTA. Each FTA supports 16 channels. Two types of LLMUX FTA are supported. One provides 16 RTD inputs.
The other provides 16 TC or MV inputs. Any combination of FTAs may be used to provide the mix of TC, mV or RTD
points required.
Notable Features
• TC and RTD operation
• Remote cold junction capability
• 1 Second PV scanning with OTD protection
• Configurable OTD protection (See below)
• Temperature points can be added in 16 point
increments
Temperature Support
The Temperature Input LLMUX supports the existing solid state PMIO LLMUX FTA. The PMIO LLMUX FTA supports
RTD and Thermocouple (TC) inputs. The Temperature variable is collected from all points at a 1 second rate. The 1
second update includes a configurable check for Open Thermocouple Detection (OTD) (see below) before propagation
of the temperature variable. All TC inputs are compensated using a Cold Junction Compensation (CJT) device.
Sampling and Open Sensor Detect
The Temperature multiplexer supports RTD and Thermocouples with Open Sensor Detect before PV delivered if so
configured. With the OTD configuration active, the PV is sampled and held while an OTD cycle is performed within the
same measurement window. If the OTD is negative, the PV is propagated up through the system. If the OTD is positive,
the PV is set to NAN and the input channel soft failure is set. In this way, no inappropriate control action occurs for PV
values that are invalid due to an open thermocouple. PV sampling/reporting incurs no added delays from OTD
processing.
Detailed Specs – Low Level Input Multiplexer
Parameter Specification
Input / Output Model CC PAIM01
PMIO FTA Models 1 MU-TAMR04, TAMT04, TAMT14
Input Type Thermocouple and / or RTD
Input channels 64 fully-isolated channel-to-channel, channel-to-PM, and
channel-to-power supply common in 16 channel increments.
Input scan rate 1 Second fixed by IOM (up to 64 channels/sec max.)
Channel bandwidth 0 to 4.7 Hz (-3 dB)
Nominal input range (TC only) -20 to +100 millivolts
Maximum normal mode continuous input non-damaging
(any thermocouple type configured)
-10 to +10 volts (TC)
-1 to +2 Volts @ 100 milliamps (RTD)
Gain error (-20 to +100 millivolt range) 0.050% full scale max
Temperature stability TC, millivolt inputs +/-20 ppm per deg C max
RTD inputs +/-20 ppm per deg C max
Long term drift 500 ppm
Parameter Specification
Input impedance 1 megohm at dc (TC only)
CMV with respect to Power System common, dc to 60
Hz
+/-250 VDC or VAC RMS
CMRR, 50 or 60 Hz (with 1000 ohms source impedance
max.)
120 dB min
Voltage, channel-to-channel, dc to 60 Hz +/-250 VDC or VAC RMS
Crosstalk, dc to 60 Hz 80 dB (120 dB at 50 and 60 Hz)
NMRR at 50/ 60 Hz 60 dB min
Line frequency integration Fixed selection of 50 Hz or 60 Hz
RTD sensor excitation current 1 milliamp
Cold Junction Reference (CJR) Accuracy 0 to +50 deg C – +/-1.0 deg C Max
-20 to +60 deg C – +/-1.5 deg C Max
TC Linearization Accuracy 2 ± 0.05 Ω / deg C
Open Thermocouple Detection Each conversion qualified, ≤ 1000 Ω = guaranteed no-trip
≥ 1500 Ω guaranteed trip.
RTD Max Lead Resistance 15 Ω
Surge protection (sensor terminals) EN 61000-4-5 (for Industrial locations, 1kV line to line, 2kV
line to gnd.)
Surge protection (power/serial link with cable adapter
option)
EN 61000-4-5 (for Industrial locations, 1kV line to line, 2kV
line to gnd.)
Maximum cable distance IOTA to FTA using cable
adapter
1000 feet 16 gauge wire, two twisted pair per FTA