Honeywell Digital Input, Contact type, (16 channel)900G01-0202
Parameter Specification
Input type Current (2, 3, or 4 wire devices)
Input Channels 16 Maximum per module
(line monitored)
A/D Converter Resolution 16 Bit
Input Range 4-20 mA
Crosstalk, dc to 60 Hz (channel-to-channel) 58dB
Input Impedance 250 Ω nominal
Maximum Input Voltage (any input referenced to
common, no damage)
0 - 30V
Hardware accuracy 0.1% of full-scale (23.5 ± 2°C)
0.17% of full-scale (0 to +60°C)
Transmitter Field Power Conditioning Current limited to 24 mA
Input Filter First-order low-pass 1 kHz
Detail Specifications – Analog Output
Parameter Specification
Output Type 4-20 mA current loop
Output Channels 8 Maximum per module 1
(with line monitoring)
Assignable as channels 9 to 16
Accuracy <0.5% of Full Scale (25oC) including linearity, entire
operating temperature
Output Ripple =< 125 mV peak-to-peak at power line frequency, across
250 Ohm load
Output Readback Accuracy 0.17% of full scale
Output Current Linearity ± 0.1% of Full Scale nominal
Resolution 12 Bit
Directly Settable Output Current Range 2.4 mA to 21 mA
Maximum Resistive Load 7504 Ohms
Minimum Resistive Load 250 Ohms
Maximum Output Compliant Voltage
(24 V supply = 22 VDC through 28 VDC)
14 VDC
Maximum Open Circuit Voltage 24 VDC
Maximum Load capacitance < 1 uF

Detail Specifications – Digital Input with OWD
Parameter Specification
Open Voltage 24V
Short Circuit Current 7 mA
Open Contact 15 kΩ > 0.1 W A
Closed Contact 5 kΩ > 0.25 W B
Short circuit detection I > 6 mA +/-5 %
Closed contact detection 2.8 mA < I < 6 mA +/-5 %
Open contact detection 0.9 mA <= I <= 2.8 mA +/-5 %
Lead Breakage Detection I < 0.9 mA +/-5 %
Input filter First-order low-pass 1 kHz
Note A: At 24 VDC, equates to 8.57 KΩ > R > 4 KΩ (where R = total loop resistance)
Note B: At 24 VDC, equates to 26.7 KΩ > R > 10 KΩ
Detail Specifications – Digital Input without Open Wire Detection
Parameter Specification
Open Voltage 24 VDC
Closed contact detection I > 2.81 mA C
Open contact detection I < 1.8 mA D
Input filter First-order low-pass 1 kHz
Note C: At 24 VDC, equates to R < 8.57 KΩ (where R = total loop resistance)
Note D: At 24 VDC, equates to 26.7 KΩ > R > 10 KΩ
Detail Specifications – Digital Output
Parameter Specification
Output Channels 16 Maximum per module (with line monitoring) 2
Output Type Solid state source, short circuit protected
Load Current 0mA Minimum to 0.5 A Maximum per channel
4 A Maximum per module
On-State Voltage 24 V (typ), load current @ 0.5 A
Off-State Voltage 0 VDC (max) Open Load
Off-State Leak Current < 0.1 mA
Maximum Load Inductance < 10 H
Maximum Load Capacitance < 1 uF
Lamp Load < 3 Watt (Verify Inrush Current requirement of Lamp Load)
Inrush Current 1 A for 10 uS
DO read back current Accuracy DO Current : 0-10 mA +/- 1 mA
11-100 mA +/- 5 mA
101-500 mA +/- 20 mA
Short Circuit Protection Internal Electronic (750 mA)
Note:
1. 900U02 modules may not be installed such that the 900U02 is between two 900B16 modules. 900B16 may only be
installed in one adjacent slot.
2. Field power to be supplied by a local power supply providing tertiary protection from zone B severity levels. Generally
characterized by short wiring, isolation, surge suppressors etc.
3. For Marine applications ABS Type approved power supplies are required for field supply voltage.
4. Field supply voltage should be maintained higher than 22.5 V for AO higher AO loads (> 750 Ohms)