3BSC690087R1 ABB AO895 Analog Output Module

Overview

Product Description:
The AO895 Analog Output Module is designed for providing 8 channels of 4...20 mA analog outputs. It features intrinsic safety protection components and a HART interface on each channel, allowing connection to process equipment in hazardous areas without the need for additional external devices. Each channel can drive up to 20 mA loop current into a field load, such as an Ex certified current-to-pressure converter, and is limited to 22 mA in overload conditions. The module’s output stages are powered from the 24 V power supply connections, with all channels isolated from the ModuleBus and power supply in one group.

Features and Benefits:

• 8 channels of 4...20 mA outputs.
• HART communication capability.
• Groupwise isolation of 8 channels from ground.
• Capable of driving Ex certified I/P actuators.

Article Number:
3BSC690087R1

Type:
Analog Output

Signal Specification:
4...20 mA

Number of Channels:
8

Signal Type:
Unipolar single-ended

HART:
Yes

SOE (Sequence of Events):
No

Redundancy:
No

High Integrity:
No

Intrinsic Safety:
Yes

Mechanics:
S800

Resolution:
12 bit

Isolation:
Groupwise isolated from ground

Under/Over Range:
2.5 / 22.4 mA

Output Load:

• <725 ohms at 20 mA, no over-range
• <625 ohms at up to 22 mA

Error:

• Typ. 0.05%, Max. 0.1% at 650 ohms

Temperature Drift:

• Typ. 50 ppm/°C, Max. 100 ppm/°C

Rise Time:
30 ms (10% to 90%)

Current Limiting:
Short circuit proof current limited output

Rated Insulation Voltage:
50 V

Dielectric Test Voltage:
500 V a.c.

Power Dissipation:
4.25 W

Current Consumption +5 V Modulebus:
Typ. 130 mA

Current Consumption +24 V External:

• Typ. 250 mA
• Max. <330 mA

Front LEDs:
F (Fault), R (Run), W (Warning), O (SP), Tx (HART Communication)

Supervision:
Internal process supply, Open wire if > 1 mA is set

CE Mark:
Yes

Electrical Safety:
EN 61010-1, EN 61010-2-201

Hazardous Location:

• ATEX/IECEx Zone 2 with interface to Zone 0
• cFMus C1, Div 2/Zone 2 with interface to C1, C2, C3 Div 1/Zone 0

Marine Certification:

Operating Temperature:
0 to +55 °C (+32 to +131 °F)

Storage Temperature:
-40 to +70 °C (-40 to +158 °F)

Pollution Degree:
Degree 2, IEC 60664-1

Corrosion Protection:
ISA-S71.04: G3

Relative Humidity:
5 to 95 %, non-condensing

Max Ambient Temperature:

• 55 °C (131 °F) for vertical mounting in compact MTU
• 40 °C (104 °F) for compact MTU

Protection Class:
IP20 according to IEC 60529

Mechanical Operating Conditions:
IEC/EN 61131-2

EMC:
EN 61000-6-4 and EN 61000-6-2

Overvoltage Categories:
IEC/EN 60664-1, EN 50178

Equipment Class:
Class I according to IEC 61140; (earth protected)

RoHS Compliance:
DIRECTIVE/2011/65/EU (EN 50581:2012)

WEEE Compliance:
DIRECTIVE/2012/19/EU

Use with MTU:
TU890, TU891, and TU891Z

Keying Code:
AF

U0 (Groups CENELEC USA):
IIC

I0 (Groups CENELEC USA):
IIB

P0 (Groups CENELEC USA):
IIA

U0 - C0 (uF):
0.087

U0 - L0 (mH):
4.1

U0 - L/R (uH/O):
55

I0 - C0 (uF):
0.702

I0 - L0 (mH):
16.4

I0 - L/R (uH/O):
222

P0 - C0 (uF):
2.23

P0 - L0 (mH):
32.8

P0 - L/R (uH/O):
443

Width:
45 mm (1.77”)

Depth:
102 mm (4.01”), 111 mm (4.37”) including connector

Height:
119 mm (4.7”)

Weight:
0.2 kg (0.44 lbs.)