HACH DOC273.98.90587 4-20 mA Output Module User Manual
- June 9, 2024
- HACH
Table of Contents
DOC273.98.90587
4–20 mA Output Module
03/2022, Edition 8
User Instructions
Section 1 Specifications
Specifications are subject to change without notice.
| Specification | Details |
|---|---|
| Current | 23 mA maximum |
| Loop resistance | 12–18 VDC power supply: 0–250 Ω; 18–24 VDC power supply: |
250–500 Ω
Wiring| Wire gauge: 0.08 to 1.5 mm2 (28 to 16 AWG) with an insulation rating
of 300 VAC or higher1
Operating temperature| –20 to 60 °C (–4 to 140 °F); 95% relative humidity,
non-condensing
Storage temperature| –20 to 70 °C (–4 to 158 °F); 95% relative humidity, non-
condensing
Certification| Listed for use with the SC4200c/SC4500 controller in Class 1,
Division 2, Group A, B, C and D, Zone 2, Group IIC hazardous locations to FM
and CSA safety standards by ETL
Section 2 General information
In no event will the manufacturer be liable for direct, indirect, special,
incidental or consequential damages resulting from any defect or omission in
this manual. The manufacturer reserves the right to make changes in this
manual and the products it describes at any time, without notice or
obligation. Revised editions are found on the manufacturer’s website.
2.1 Safety information
The manufacturer is not responsible for any damages due to misapplication or
misuse of this product including, without limitation, direct, incidental and
consequential amages, and disclaims such damages to the full extent permitted
under applicable law. The user is soley responsible to identify critical
application risks and install appropriate mechanisms to protect processes
during a possible equipment malfunction.
Please read this entire manual before unpacking, setting up or operating this
equipment. Pay attention to all danger and caution statements. Failure to do
so could result in serious injury to the operator or damage to the equipment.
Make sure that the protection provided by this equipment is not impaired. Do
not use or install this equipment in any manner other than that specified in
this manual.
2.1.1 Use of hazard information
DANGER
Indicates a potentially or imminently hazardous situation which, if not
avoided, will result in death or serious injury.
**WARNING**
Indicates a potentially or imminently hazardous situation which, if not
avoided, could result in death or serious injury.
1 Do not use wire gauge other than 0.08 to 1.5 mm² (28 to 16 AWG), unless wires can be isolated from mains power and relay circuits.
CAUTION
|Indicates a potentially hazardous situation that may result in minor or
moderate injury.
NOTICE
Indicates a situation which, if not avoided, may cause damage to the
instrument. Information that requires special emphasis.
2.1.2 Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if not observed. A symbol on the instrument is referenced in the manual with a precautionary statement.
| This symbol, if noted on the instrument, references the instruction
manual for operation and/or safety information.
---|---
| This symbol indicates that a risk of electrical shock and/or
electrocution exists.
| This symbol indicates the presence of devices sensitive to Electro-static
Discharge (ESD) and indicates that care must be taken to prevent damage with
the equipment.
| Electrical equipment marked with this symbol may not be disposed of in
European domestic or public disposal systems. Return old or end-of-life
equipment to the manufacturer for disposal at no charge to the user.
2.1.3 Class 1 Division 2 label
| This label indicates that the module is approved for use in a Class I Div 2
A-D, T4/Class I Zone 2 IIC, T4 environment when used with a Class I Div 2
approved SC4200c and SC4500 controllers and sensors: LDO and TSS-Ex 1.
---|---
2.1.4 Precautions for hazardous location installation
DANGER
****| Explosion hazard. Only qualified personnel should conduct the installation tasks described in this section of the manual. This equipment is suitable for use in Class 1, Division 2, Groups A, B, C & D Hazardous Locations with specified sensors and options appropriately certified and rated for Class I, Division 2, Group A, B, C & D , Zone 2, Group IIC Hazardous Locations.
DANGER
****| Explosion hazard. Do not remove or replace modules while power is supplied to the controller unless there are no ignitable gases in the area.
DANGER
| Explosion hazard. Do not connect or disconnect electrical components or circuits to the equipment unless power has been removed or the area is known to be non-hazardous.
DANGER
| Explosion hazard. Connect only peripheral components that are clearly marked as certified for Class 1, Division 2 Hazardous Locations.
Never connect any sensor or digital or analog module to an SC Controller that
is not clearly marked as certified for Class 1, Division 2 Hazardous
Locations.
2.2 Icons used in illustrations
| | | | 
---|---|---|---|---
Manufacturer supplied parts| User supplied parts| Look| Listen| Do one of
these options
2.3 Product overview
The 4–20 mA output module is an expansion card that supplies five 4–20 mA
analog output connections to the SC4200c and SC4500 controllers. The module
connects to the expansion modules slots inside the controller. The analog
outputs are commonly used for analog signaling or to control other external
devices.
2.4 Product components
Make sure that all components have been received. Refer to Figure 1. If
any items are missing or damaged, contact the manufacturer or a sales
representative immediately.
Figure 1 Product components
| 1 Module connector | 3 Label with wiring information |
|---|
2 4-20 mA output module
Section 3 Installation
DANGER
****| Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the document.
DANGER
****| Electrocution hazard. Remove power from the instrument before this procedure is started.
DANGER
****| Electrocution hazard. High voltage wiring for the controller is conducted behind the high voltage barrier in the controller enclosure. The barrier must remain in place unless a qualified installation technician is installing wiring for power, alarms, or relays.
WARNING
| Electrical shock hazard. Externally connected equipment must have an applicable country safety standard assessment.
NOTICE
Make sure that the equipment is connected to the instrument in accordance with local, regional and national requirements.
NOTICE
****| Potential Instrument Damage. Delicate internal electronic components can be damaged by static electricity, resulting in degraded performance or eventual failure.
Refer to the steps in this procedure to prevent ESD damage to the instrument:
- Touch an earth-grounded metal surface such as the chassis of an instrument, a metal conduit or pipe to discharge static electricity from the body.
- Avoid excessive movement. Transport static-sensitive components in anti-static containers or packages.
- Wear a wrist strap connected by a wire to earth ground.
- Work in a static-safe area with anti-static floor pads and work bench pads.
3.2 Install the module
Install the module in the controller. Refer to the illustrated steps that
follow.
Notes:
- To keep the enclosure rating, make sure that all unused electrical access holes are sealed with an access hole cover.
- To maintain the enclosure rating of the instrument, unused cable glands must be plugged.
- Maximum loop resistance is 500 Ω.
- The analog outputs are isolated from the other electronics, but are not isolated from each other.
- The analog outputs are self-powered. Do not connect to a load with voltage that is independently applied.
- The analog outputs cannot be used to supply power to a 2-wire (loop-powered) transmitter.
NOTICE
Use cabling with a wire gauge of 0.08 to 1.5 mm²(28 to 16 AWG)² and an
insulation rating of 300 VAC or higher. Use twisted-pair shielded wire³.
² Do not use wire gauge other than 0.08 to 1.5 mm² (28 to 16 AWG), unless
wires can be isolated from mains power and relay circuits.
³ Use of non-shielded cable may result in radio frequency emission or
susceptibility levels higher than allowed.
Table 1 Wiring information
| Terminal | Signal | Terminal | Signal |
|---|---|---|---|
| 1 | Output 1+ | 7 | Output 4+ |
| 2 | Output 1– | 8 | Output 4– |
| 3 | Output 2+ | 9 | Output 5+ |
| 4 | Output 2– | 10 | Output 5– |
| 5 | Output 3+ | 11 | Shield |
| 6 | Output 3– | 12 | Shield |
Section 4 Configuration
Refer to the controller documentation for instructions. Refer to the expanded user manual on the manufacturer’s website for more information.
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