1. General Introduction
The AO895 Analog Output Module has 8 channels. The module includes Intrinsic Safety protection components and HART interface on each channel for 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. All eight channels are isolated from the Module Bus and power supply in one group. Power to the output stages is converted from the 24 V on the power supply connections.
2. Specification of AO895
General info | |
Type | Analog Output |
Signal specification | 4..20 mA |
Article number | 3BSC690087R1 |
Number of channels | 8 |
Signal type | Unipolar single ended |
HART | Yes |
SOE | No |
Redundancy | No |
High Integrity | No |
Intrinsic safety | Yes |
Mechanics | S800 |
Detailed data | |
Resolution | 12 bits |
Isolation | GroupWise isolated from ground |
Under/over range | 2.5 / 22.4mA |
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 | 4.25W |
Current consumption +5 V Module bus | Typ. 130 mA |
Current consumption +24 V external | Typ. 250 mA, Max. <330 mA |
Diagnostics | |
Front LED’s | F(ault), R(un), W(arning), O(SP), Tx (HART communication) |
Supervision | Internal process supply, Open wire if > 1 mA is set |
Environmental and certification | |
CE mark | Yes |
Electrical safety | IEC 61131-2, UL 508 |
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 | - |
Protection rating | IP20 according to IEC 60529 |
Corrosive atmosphere ISA-S71.04 | G3 |
Climatic operating conditions | 0 to +55 °C (Storage -25 to +70 °C), RH=5 to 95 % no condensation, IEC/EN61131-2 |
Pollution degree | Degree 2, IEC 60664-1 |
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) |
Max ambient temperature | 55 °C (131 °F), for vertical mounting in compact MTU 40 °C (104 °F) |
RoHS compliance | DIRECTIVE/2011/65/EU (EN 50581:2012) |
WEEE compliance | DIRECTIVE/2012/19/EU |
Comp ability | |
Use with MTU | mounting in compact MTU 40 °C (104 °F) |
Keying code | AF |
Intrinsic Safety parameters | |
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 |
Dimensions | |
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.) |
3. Selection table of I/O Modules
Name | HART | High Integrity | Intrinsic safety | Mechanics | Redundancy | SOE | Type |
AI801 | No | No | No | S800L | No | No | Analog Input |
AI810 | No | No | No | S800 | No | No | Analog Input |
AI815 | Yes | No | No | S800 | No | No | Analog Input |
AI820 | No | No | No | S800 | No | No | Analog Input |
AI825 | No | No | No | S800 | No | No | Analog Input |
AI830A | No | No | No | S800 | No | No | Analog Input |
AI835A | No | No | No | S800 | No | No | Analog Input |
AI843 | No | No | No | S800 | Yes | No | Analog Input |
AI845 | Yes | No | No | S800 | Yes | No | Analog Input |
AI880A | Yes | Yes | No | S800 | Yes | No | Analog Input |
AI890 | No | No | Yes | S800 | No | No | Analog Input |
AI893 | No | No | Yes | S800 | No | No | Analog Input |
AI895 | Yes | No | Yes | S800 | No | No | Analog Input |
AO801 | No | No | No | S800L | No | No | Analog Output |
AO810V2 | No | No | No | S800 | No | No | Analog Output |
AO815 | Yes | No | No | S800 | No | No | Analog Output |
AO820 | No | No | No | S800 | No | No | Analog Output |
AO845A | Yes | No | No | S800 | Yes | No | Analog Output |
AO890 | No | No | Yes | S800 | No | No | Analog Output |
AO895 | Yes | No | Yes | S800 | No | No | Analog Output |
