HACH SC4500 Controller Instruction Manual

: June 15, 2024
: HACH

Table of Contents

HACH SC4500 Controller
General information
Safety information
Product components
Installation
Electrostatic Discharge
CONTACT
References
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HACH SC4500 Controller

General information

Section 2 General information

In no event will the manufacturer be liable for damages resulting from any improper use of product or failure to comply with the instructions in the 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.

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 damages, 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.

Use of hazard information

ANGER
- 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.
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.

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. $hach-sc4500-controller-FIG-1 $1$$

Icons used in illustrations

$hach-sc4500-controller-FIG-1 $2$$ Product overview

The pH/ORP module lets a digital SC Controller connect to an analog sensor. The module connects to one of the analog sensor connectors in the controller.
For calibration and operation of the sensor, refer to the sensor user manual and the SC Controller documentation.

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 compoments

$hach-sc4500-controller-FIG-1 $3$$

1 Module connector	3 Label with wiring information

2 pH/ORP module

Modbus registers

A list of Modbus registers is available for network communication. Refer to the manufacturer’s website for more information.

Installation

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.

Electrostatic Discharge

Electrostatic discharge (ESD) considerations

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.

Install the module
To install the module and connect the sensor, refer to the illustrated steps that follow and the applicable wiring table:

pH and ORP sensors with attached cables: Table 2
pH and ORP sensors with removable cables: Table 3 and Table 4
Notes:
Make sure that the controller is compatible with the pH/ORP module. Contact technical support.
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.
Connect the module to one of the two slots on the right side of controller. Refer to Figure 2.
The controller has two analog module slots. The analog module slots are internally connected to the sensor channel. Make sure that the analog module and the digital sensor are not connected to the same channel.
- Note: Make sure that only two sensors are installed in the controller. Although two analog module ports are available, if a digital sensor and two modules are installed, only two of the three devices will be seen by the controller.
Turn the rotatory switch of the module to configure the module based on the applicable sensor. Refer to Table 1.

Figure 2 pH/ORP module slots

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Analog module slot—Channel 1
Analog module slot—Channel 2 $hach-sc4500-controller-FIG-1 $5$$ $hach-sc4500-controller-FIG-1 $6$$ $hach-sc4500-controller-FIG-1 $7$$ $hach-sc4500-controller-FIG-1 $8$$

Turn the rotatory switch of the module to configure the module based on the applicable sensor. Refer to Table 1.

Table 1 Module configuration

Switch position	Sensor type
2	Combination pH sensor
3	Combination ORP sensor
4	Differential pH sensor
5	Differential ORP sensor

$hach-sc4500-controller-FIG-1 $9$$ $hach-sc4500 -controller-FIG-1 $10$$ $hach-sc4500-controller-FIG-1 $11$$ $hach-sc4500-controller-FIG-1 $12$$

Table 2 pH and ORP sensor wiring – sensors with fixed cables

Terminal	Description	Sensor with an attached cable
Differential sensor	Combination sensor	8350

(or yellow for 6-plug sensors)1

| Jumper 1–2 on J5| Jumper 1–2 on J5
3| –V supply| White| —| —| —
4| —| —| —| —| —
5| —| —| —| —| —
6| Temp| Yellow| Red

(or green for 6-plug sensors)

| Red| Red
7| Temp/Circuit low| Black| White| White| White
8| —| —| —| —|
2-pin (J4)| 1| Active| Red| Clear| Transparent (coax core)| Transparent (coax core)
2| —| —| —| —| —
Sensor shield wires – Connect all sensor ground/shield wires to the controller enclosure grounding screws.| Clear with a black band| | —| Blue

Table 3 pH and ORP sensor wiring – sensors with removable cables

Terminal	Description	Cable type (connector)
Top68 (with temp)	SMEK	VP-Plug
8-pin (J5)	1	Reference
2	Ground solution	Jumper 1–2 on J5
3	–V supply	—
4	—	—
5	—	—
6	Temp	(Red)
7	Temp/–Circuit low	(White)
8	—	—
2-pin (J4)	1	Active
2	—	—

If the combination sensor does not have a blue wire (or yellow wire for 6-plug sensors) for solution ground, install a jumper wire between pins 1 and 2 on the 8-pin (J5) connector.
If an electrode with a ground solution is used, connect the wire to pin 2 on J5 and do not make a jumper. For the VP-Plug, use the blue wire.

Table 3 pH and ORP sensor wiring – sensors with removable cables (continued)

Terminal	Description	Cable type (connector)
Top68 (with temp)	SMEK	VP-Plug

Table 4 pH and ORP sensor wiring – sensors with removable cables (continued)

Terminal	Description	Cable type (connector)
S7 double shielded	S7 single shielded	AS9
8-pin (J5)	1	Reference
(silver)	Outer stranded wire (copper)	Outer stranded wire (copper)
2	Ground solution	Jumper 1–2 on J5

Jumper 1–2 on J5
3| –V supply| —| —| —| —
4| —| —| —| —| —
5| —| —| —| —| —
6| Temp| —| —| —| Brown
7| Temp/–Circuit low| —| —| —| White
8| —| —| —| —| —
2-pin (J4)| 1| Active| Transparent| Transparent| Transparent (core)| Transparent (core)
2| —| —| —| —| —
Sensor shield wires—Connect all sensor ground/shield wires to the controller enclosure grounding screws.| Outer stranded wire (copper)| —| —| —
Notes:| —| —| —| —

$hach-sc4500-controller-FIG-1 $13$$ $hach-sc4500 -controller-FIG-1 $14$$

Section 4 Configuration

Refer to the controller documentation for instructions.
Refer to the expanded user manual on the manufacturer’s website for more information.
DOC023.97.90760
07/2022, Edition 2