Same as E2-F3A with white cable. Use with
the HC2-S3 probe
Document code Unit
Rotronic AG
Bassersdorf, Switzerland
Accessories and Parts
Instruction Manual
for probes, indicators and transmitters
Document title
Page
o The electronic circuit of the adapter generates a small amount of heat. For this reason, do not place
the adapter directly under the probe. Depending on the application, using a passive cable to
separate the adapter and the HC2-S or HC2-S3 probe is recommended to prevent heat transfer from
the adapter to the probe and obtain the best measurement accuracy.
o See also: Maximum temperature limit for connectors, cables and adapters
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4 Extension cables for the HC2 probes
4.1 Standard passive cables
Order Code Description
E2-F3A
E3-F3A
0.3 m (1 ft) extension cable (black) HC2 to
instrument with standard 7-pin female / male
connectors and wall mounting bracket for the
HC2-S probe
Document Type
1 m (3.2 ft) extension cable (black) HC2 to
E2-01A
E3-01A Same as E2-01A with white cable
instrument with standard 7-pin female / male
connectors. Barrel length 82 mm (3.2”)
2 m (6.5 ft) extension cable (black) HC2 to
E2-02A
E3-02A Same as E2-02A with white cable
E2-05A
E3-05A Same as E2-05A with white cable
Order Code Description
E2-02AS Same as E2-02A, but with short barrel
E3-02AS Same as E3-02A, but with short barrel
NOTES:
o Al l white cables use PUR insulation (sunlight resistant)
o See also: Maximum temperature limit for connectors, cables and adapters
instrument with standard 7-pin female / male
connectors
5 m (16.4 ft) extension cable (black) HC2 to
instrument with standard 7-pin female / male
connectors
Accessories and Parts
for probes, indicators and transmitters
Document title
Instruction Manual
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8 of 23
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5 Digital interface adapters for the HC2 probe s
NOTE:
o Supply voltage to the probe: 3.3 VDC ± 0.1 VDC
o See also: Maximum temperature limit for connectors, cables and adapters
5.1 USB adapter
Order Code Description
AC3001
IMPORTANT:
o Prior to using cable AC3001, the ROTRONIC USB driver must be installed on the PC. Both the driver
and the in stallation instructions (document E-M-HW4v3-Main) are located on the HW4 CD.
Connects HC2 probe to PC running HW4
5.2 RS-232 adapter
Order Code Description
AC3002
Connects HC2 probe to PC running HW4
5.3 Ethernet adapter
Order Code Description
UART to Ethernet (TCP/IP) adapter
Connects HC2 probes to Ethernet network
AC3005
IMPORTANT:
o Prior to using cable AC3005, the TCP/IP settings of the cable must be configured by the user to be
compatible with the local area network. Detailed instructions are provided separately in documents
E-M-HW4v3-Main and E-M-TCPIP-Conf. Devices with an Ethernet interface are shipped with a Device
Configuration Certificate that provides information about the factory configuration settings.
Power supply options:
AC adapter mod. AC1207 (9VDC)
or PoE (IEEE 802.3af compliant)
Accessories and Parts
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Document title
5.4 RS-485 and Modbus adapters
Order Code Description
1 m (3.2 ft) cable (4 wires with tinned ends):
Powers the HC2 probe and allows connecting
E2-01XX-MOD
E2-02XX-MOD Same as E2-01XX-MOD with 2m (6.5 ft) cable
E2-05XX-MOD Same as E2-01XX-MOD with 5m (16.4 ft) cable
the probe to either a RS-485 network or a
Modbus network, depending on the
communication protocol used by the probe
Instruction Manual
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RS-485 specifications Baud rate : 19200
Green VDD (+) Power supply +
Grey GND Power and digital signal
Red RXD RS-485 bi-directional TX+ / RX +
Blue TXD RS-485 bi-directional TX- / RX -
NOTE: The electronic circuit of the adapter generates a small amount of heat. For this reason, do not place
the adapter directly under the probe. Depending on the application, using a passive cable to separate the
adapter and the HC2-S or HC2-S3 probe is recommended to prevent heat transfer from the adapter to the
probe and obtain the best measurement accura cy .
Accessories and Parts
for probes, indicators and transmitters
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Instruction Manual
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Networking notes:
o A Modbus network and a RS-485 network are physically identical but cannot be mixed due to the
difference between the communicatio n pr otoc ol s.
o The internal configuration of the HC2 probe determines which communication protocol (RO-ASCII or
Modbus) will be used by the combination of probe and adapter. RO-ASCII is the factory default
communication protocol for the HC2 probe and is automatically used whenever the probe is interrogated
by the HW4 software.
The protocol used by the probe when not communicating with HW4 can be changed between RO-ASCII
and Modbus with the HW4 software > Device Manager. After interrogating or configuring the probe with
HW4, cycle power to the probe to enable the selected protocol.
o When connecting the probe to a RS-485 network be sure that the probe is configured to use the RO-ASCII
protocol.
o RS-485 Compatibility: the RO-ASCII protocol is not compatible with the protocol used by the previous
generation of ROTRONIC products. Do not connect legacy products and the adapter / HC2 probe
combination to the same RS-485 multi-drop network.
o Within a RS-485 network, the combination of HC2 probe and adapter is always seen as a slave. The RS-
485 address is that of the HC2 probe. The factory default is address 0. The master is another ROTRONIC
device with an interface combination such as RS-485 and USB or RS-485 and TCP/IP.
Please note that each device connected to a RS-485 networ k , includ ing the ma ster dev ice , must have a
unique address. As long as the factory default address of the HC2 probe (0) has not been changed, the
HW4 software will automatically change the address of the probe to the next available address at the time
that the probe is added as a slave to a RS-485 network monitored by HW4.
The RS-485 address of the HC2 probe can also be changed manually with the HW4 software Device
Manager.
o Each adapter can be powered either by an individual voltage source or centrally powered from the network
with a single voltage source. In the case of a network that both provides power and transmits data, a
shielded cable with two twisted pairs is required for the main bus.
o User to supply all necessary connecting hardware such as T-connection box, terminal box, etc.
o Prior to using the adapter, we strongly recommend consulting the following documents:
E-M-HW4v3-Main, E-M-HW4v3-F2-001 and E-M-AC3000-CP
o HF45
o HF53 with digital option
o HF55
o HF65
o HF8 with RS-485 port
IMPORTANT:
1) Do not use the AC3010 with legacy devices or with the HygroLog HL-NT
2) Prior to using the AC3010, the ROTRONIC USB driver must be installed on the PC (available from
the HW4 CD or from www.rotronic-humidity.c om). For installation instructions see document
E-M-HW4v3-Main (§ 7.3).
Order Code Description
Document Type
AC3010
devices to a USB port The AC3010 itself
does not count as a device on the RS-485
network and does not have a RS-485 address
The AC3010 converter cable is powered
directly from the USB port and does not
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Instruction Manual
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7.1.1 Powering the networked devices from the RS-485 main data line
Depending on the model, the devices connected to a RS-485 network can be powered from the main data line
as opposed to each device being powered separately. Please check the instruction manual of each device
The AC3010 offers the following options to power devices from the main data line:
a) Power directly from the USB port
Cable AC3010 has two wires (V+ and GND) that can be used to power the networked devices directly from
the USB port (5 VDC, 100 mA). In addition to the limit of 100 mA, the length of the main data line should not
exceed 100 m / 330 Ft.
Cable AC3010
Master Substitute
Does not have an
address
TX+ / RX+
GND
USB port (PC)
240 Ω
b) Power from a separate voltage source
When the networked devices are not powered from the USB port, the length of the main data line can be up to
1000 m / 3300 Ft.
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Instruction Manual
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7.1.2 RS-485 network design and installation
Please follow the instructions provided in doc ume nt E-DV04-RS485.01
o Limit the RS-485 network to a single main data line (one segment)
o Terminate each end of the main data line with a 240 Ohm resistor. Termination resistors should be placed
only at the extreme ends of the data line, and no more than two terminations should be placed in any
single segment of an RS-485 network
o The total length the T connections should be included in the limit set for the main data line
(100 m or 1000 m)
o Do not connect more than 64 devices to the same main data line
o Each device connected to the RS-485 network should be given a unique address (1 to 64)
7.2 Ethernet / RS-485 converter
Use with:
o Any AirChip 3000 device that has a RS-485 port
o Docking stations for the HygroLog HL-NT
o Any legacy device that has a RS-485 port
IMPORTANT:
1) Use of the AC3011 requires a PC with the HW4 software version 2.4.0 or higher. The HW4 software
includes an Ethernet Configuration Tool that can be used to make the TCP/IP settings of the AC3011
converter compatible with the LAN to which the HW4 PC is connected For add itio nal information see
documents E-M-HW4v3-Main (§ 7.4 and § 11.2) and IN-E-TCPIP-Conf.
2) The AC3011 converter allows mixing both AirChip 3000 and legacy devices within the same RS-485
network as long as all devices use the same Baud rate (19200)
Order Code Description
AC3011
Allows connecting up to 64 RS-485 slave
devices to an Ethernet port (PC or LAN).
The AC3011 has an IP address but no RS485 address and does not count as one of the
devices on the RS-485 networ k.
Accessories and Parts
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Instruction Manual
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7.2.2 Powering the networked devices from the RS-485 main data line
Depending on the model, the devices connected to a RS-485 network can be powered from the main data line
as opposed to each device being powered separately. Please check the instruction manual of each device
The AC3011 offers the following options to power devices from the main data line:
a) Power from the same source as the AC3011
This option can be used only when the mA rating of the power supply used for the AC3011 is sufficient to
power both the AC3011 and the networked devices.
Accessories and Parts
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Instruction Manual
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7.2.3 RS-485 network design and installation
Please follow the instructions provided in doc ume nt E-DV04-RS485.01
o Limit the RS-485 network to a single main data line (one segment)
o Terminate each end of the main data line with a 240 Ohm resistor. Termination resistors should be placed
only at the extreme ends of the data line, and no more than two terminations should be placed in any
single segment of an RS-485 network
o The total length the T connections should be included in the limit set for the main data line
(100 m or 1000 m)
o Do not connect more than 64 devices to the same main data line
o Each device connected to the RS-485 network should be given a unique address (1 to 64)
7.2.4 Dimensional drawings
7.3 Junction box for RS-485 networks
The AC3021 is a wall mounted junction box designed to facilitate the connection of devices to a RS-485 main
data line.
Order Code Description
AC3021
Passive junction box for RS-485 networks,
designed for wall mounting
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Instruction Manual
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Built-in resistor for terminating main data line 240 Ohm, can be connected or disconnected with a
7.3.1 Principle diagram
Junction box AC3021 allows the following connections:
D +: TX+ / RX+ (RS-485 bidirectional)
D - : TX- / RX- (RS-485 bidirectional)
V + : Supply voltage (+) via RS-485 data line
GND: Supply voltage (-) via RS-485 data line
Shield: RS-485 data line shield
Accessories and Parts
for probes, indicators and transmitters
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8 Mounting hardware
8.1 Mounting hardware for through-wall probe installation
Order Code Description
Mounting flange with compression fitting for
(15 mm / 0.6” diameter probe).
AC5005
AC5001
Use for though wall installation of the HF4
type D
Maximum temperature 100 °C (212°F)
Sleeve for adapting a 15 mm / 0.6” diameter
probe to a 25 mm / 1.0 “ diameter throughwall mounting hole (HF42 and HF43 type D,
vertical mounting position)
Facilitates the replacement of older products
with a 25 mm probe diameter
Instruction Manual
Document Type
19 of 23
Order Code Description
AC1303-M
AC1304-M
AC1305
AC1306
Compression fitting for 15 mm (1.0”) diameter
probes. Maximum temperature 200 °C (392°F)
Compression fitting for 25 mm (0.6”) diameter
probes. Maximum temperature 200 °C (392°F)
Flange for AC1303-M – nickel coated stee l
Diameter: 80 mm (3.1”)
Flange for AC1304-M – nickel coated stee l
Diameter: 80 mm (3.1”)