Automationdirect F0-08-ADH-1 User Manual

F0-08ADH-1, 8-CHAnnel

Chapter

AnAlog Current Input

In This Chapter...

Module Speciﬁcations ...............................................................................................4–2

Connecting and Disconnecting the Field Wiring .....................................................4–4

Wiring Diagram .........................................................................................................4–5

Module Operation ..................................................................................................... 4–6

Special V-memory Locations .....................................................................................4–7

Using the Pointer in Your Control Program ............................................................. 4–9

Scale Conversions .................................................................................................... 4–11

Module Resolution ...................................................................................................4–14

Analog Input Ladder Logic Filter ............................................................................4–15

Chapter 4: F0-08ADH-1, 8-Channel Analog Current Input

Module Speciﬁcations

The F0-08ADH-1 Analog Input module offers the following features:

• The DL05 and DL06 will read all eight channels in one scan.

• The removable terminal block simpliﬁes module replacement.

• Analog inputs can be used as process variables for the four (4) PID loops in the DL05 and the eight (8) PID loops in the DL06 CPUs.

• On-board active analog ﬁltering and RISC-like microcontroller provide digital signal processing to maintain precise analog measurements in noisy environments.

• These modules are isolated from the PLC power supply logic side (1800 Volt).

4–2

NOTE: The DL05 CPU’s analog feature for this module requires DirectSOFT32 Version 3.0c (or later) and ﬁrmware version 5.20 (or later). The DL06 requires DirectSOFT32 version V4.0, build 16 (or later) and ﬁrmware version 2.30 (or later). See our website for more information: www.automationdirect.com.

DL05/06 Option Modules User Manual; 7th Ed. Rev. E

Chapter 4: F0-08ADH-1, 8-Channel Analog Current Input

The following tables provide the speciﬁcations for the F0–08ADH –1 Analog Input Module. Review these speciﬁcations to make sure the module meets your application requirements.

Input Specifications

Inputs per module Input Range Resolution Input Type Maximum Continuous Overload Input Impedance Filter Characteristics

PLC Data Format Sample Duration Time

All Channel Update Rate Open Circuit Detection Time Conversion Method Accuracy vs. Temperature Maximum Inaccuracy Linearity Error (End to End) Input Stability and Repeatability Full Scale Calibration Error (incl offset) Offset Calibration Error Maximum Crosstalk at DC, 50 Hz and 60 Hz Recommended Fuse (external) External 24VDC Power Required Base Power Required (5.0 V)

Each channel requires 2 words of V-memory irrespective of the format used.

8 0–20 mA 16-bit, 0.305 µA/bit Single Ended (one common) ±31mA 100 ohms, 1/10W, current input Low pass, -3dB @ 60Hz

16-bit, Unsigned Integer, 0–FFFF (binary) or 0–65535 (BCD)

10.2 ms (time to 95% of full step change per channel)

81.6 ms Zero reading within 1s Successive Approximation ±50 PPM/°C Maximum

0.2% of range (including temperature changes) ±10 count maximum; Monotonic with no missing codes ±10 count maximum ±10 count maximum ±10 count maximum ±10 count maximum Littlefuse Series 217, 0.032 A fuse 24VDC ±10% @ 25mA 25mA

Operating Temperature Storage Temperature Humidity Environmental air Vibration Shock Field to Logic side Isolation Insulation Resistance

Noise Immunity

Agency Approvals Module Location Field Wiring Weight

DL05/06 Option Modules User Manual; 7th Ed. Rev. E

General Specifications

0 to 55°C (32 to 131°F)

-20 to 70°C (-4 to 158°F) 5 to 95% (non-condensing) No corrosive gases permitted (EN61131-2 pollution degree 1) MIL STD 810C 514.2 MIL STD 810C 516.2 1800VAC applied for 1 second (100% tested) >10M ohms @ 500VDC NEMA ICS3-304; Impulse 1000V @ 1ms pulse;

RFI, (145MHz, 440Mhz 5W @ 15cm); Worst case error during noise disturbance is 0.5% of full scale

UL508; UL60079-15 Zone 2 Any slot in a DL05 or DL06 System Removable Terminal Block 49g (1.7 oz.)

4–3

Chapter 4: F0-08ADH-1, 8-Channel Analog Current Input

Connecting and Disconnecting the Field Wiring

WARNING: Before removing the analog module or the terminal block on the face of the module, disconnect power to the PLC and all field devices. Failure to disconnect power can result in damage to the PLC and/or field devices.

Wiring Guidelines

Your company may have guidelines for wiring and cable installation. If so, you should check those before you begin the installation. Here are some general things to consider:

• Use the shortest wiring route whenever possible.

• Use shielded wiring and ground the shield at the transmitter source. Do not ground the shield at both the module and the source.

• Do not run the signal wiring next to large motors, high current switches, or transformers. This may cause noise problems.

• Route the wiring through an approved cable housing to minimize the risk of accidental damage. Check local and national codes to choose the correct method for your application.

The F0–08ADH–1 does not supply power to ﬁeld devices. You will need to power transmitters separately from the PLC.

To remove the terminal block, disconnect power to the PLC and the ﬁeld devices. Pull the terminal block ﬁrmly until the connector separates from the module.

You can remove the analog module from the PLC by folding out the retaining tabs at the top and bottom of the module. As the retaining tabs pivot upward and outward, the module’s connector is lifted out of the PLC socket. Once the connector is free, you can lift the module out of its slot.

4–4

NOTE: The F0–08ADH–1 analog module cannot sense the loss of analog input signals in 0–20 mA loops.

Terminal Block Specifications

Number of Positions Re-Order Number Pitch

Wire Range

Screwdriver Size (Slotted) Screw Size Screw Torque

13 D0-ACC-4

0.2 inch (5.08 mm) 28–16 AWG Solid or Stranded Conductor;

Wire strip length 5/16” (7–8 mm)

0.4T x 2.5W mm (part number DN-SS1) M2.5 size

4.5 inch-pounds (0.52 N·m)

DL05/06 Option Modules User Manual; 7th Ed. Rev. E

Chapter 4: F0-08ADH-1, 8-Channel Analog Current Input

Wiring Diagram

Use the following diagram to connect the ﬁeld wiring. If necessary, the F0–08ADH–1 terminal block can be removed to make removal of the module possible without disturbing ﬁeld wiring.

2-wire 4–20mA

Transmitter

2-wire 4–20mA

Transmitter

4-wire 4–20mA

Transmitter

3-wire 4–20mA

Transmitter

SHIELD CONNECTED TO SIGNAL SOURCE COMMON. SEE NOTE 2.

Note 1: A Littelfuse Series 217, 0.032A fast-acting fuse is recommended for all 4-20mA current loops. Note 2: Do not connect both ends of shield.

Current Loop Transmitter Impedance

Manufacturers of transmitters and transducers specify a wide variety of power sources for their products. Follow the manufacturer’s recommendations.

In some cases, manufacturers specify a minimum loop or load resistance that must be used with the transmitter. The F0-08ADH-1 provides 100 ohm resistance for each channel. If your transmitter requires a load resistance below 100 ohms, you do not have to make any changes. However, if your transmitter requires a load resistance higher than 100 ohms, you need to add a resistor in series with the module.

Consider the following example for a transmitter being operated from a 30VDC supply with a recommended load resistance of 750 ohms. Since the module has a 100 ohm resistor, you need to add an additional resistor.

R = Tr–Mr R = Resistor to add

R = 750–100 Tr = Transmitter requirement

R M 650 Mr = Module resistance (internal 100 ohms)

4-20mA Transmitter

Shield, Ch. 5

4-20mA Transmitter

Shield, Ch. 1

SEE NOTE 1.

Shield, Ch. 3

Shield, Ch. 8

.032A

AC or DC

24VDC

Power Supply

CH1

CH3

COM

CH5

CH8

COM

+24VDC

0VDC

Internal Module CircuitryTypical User Wiring

CH1 ADC

CH2 ADC

CH3 ADC

CH4 ADC

CH5 ADC

CH6 ADC

CH7 ADC

CH8 ADC

ISOLATED ANALOG CIRCUIT POWER

F0-08ADH-1

ANALOG

0–20mA

CH1

CH2

CH3

CH4

COM

CH5

CH6

CH7

CH8

COM

+24V

100 Ω

DC Supply

+30V

Two-wire Transmitter

+–

Module Channel 1

CH1

COM

125 ohms

DL05/06 Option Modules User Manual; 7th Ed. Rev. E

4–5

Chapter 4: F0-08ADH-1, 8-Channel Analog Current Input

Module Operation

Channel Scanning Sequence

The DL05 and DL06 will read all eight channels of input data during each scan. Each CPU supports special V-memory locations that are used to manage the data transfer. This is discussed in more detail beginning in the section on “Special V-memory Locations”.

Scan

Read Inputs

Execute Application Program

Read the data

Store data

Write to Outputs

Scan N

Scan N+1

Scan N+2

Scan N+3

Scan N+4

DL05/DL06 PLC

Ch 1, 2, 3, 4, 5, 6, 7, 8

Analog Module Updates

Even though the channel updates to the CPUs are synchronous with the CPU scan, the module asynchronously monitors the analog transmitter signals and converts each signal into a 16-bit binary representation. This enables the module to continuously provide accurate measurements without slowing down the discrete control logic in the RLL program.

The module takes approximately 10.2 milliseconds to sense 95% of the change in the analog signal per channel. It takes approximately 81.6 ms to sample all channels.

NOTE: If you are comparing other manufacturers’ update times (step responses) with ours, please be aware that some manufacturers refer to the time it takes to convert the analog signal to a digital value. Our analog to digital conversion takes only a few microseconds. It is the settling time of the ﬁlter that is critical in determining the full update time. Our update time speciﬁcation includes the ﬁlter settling time.

4–6

DL05/06 Option Modules User Manual; 7th Ed. Rev. E

+ 12 hidden pages

Automationdirect F0-08-ADH-1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Connecting and Disconnecting the Field Wiring

Wiring Diagram

Module Operation