iSMA iSMA-B-FCU Series User manual

iSMA-B-FCU
User Manual
FCU Hardware
Global Control 5 Sp. z o.o.
Warsaw, Poland
www.gc5.pl

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Table of contents
1Introduction 3
1.1 Document change log 3
1.2 Safety rules 3
1.3 Technical specifications 4
1.4 Dimensions 6
2Hardware specification 7
2.1 Diagram of terminals and internal connections 7
iSMA-B-FCU-HH 7
iSMA-B-FCU-HL 8
iSMA-B-FCU-LL 9
2.2 Power supply connection 10
24V AC power supply for external equipment 10
2.3 Connecting the communication bus (RS485) 11
RS485 grounding and shielding 11
RS485 network termination 11
2.4 RJ12 Panel connection 12
2.5 Mini USB Port 12
2.6 Front panel LED functions 12
2.7 Setting controller address 13
2.8 Baud rate selection 14
2.9 Protocol selection 15
2.10 Restoring the default settings 15
2.11 Default settings 15
2.12 CFG DIP switch 16
3ISMA-B-FCU device inputs 17
3.1 Special Inputs 17
Special Inputs operating as digital inputs 17
Special Inputs operating as 0-10 V DC analog inputs 18
Special Inputs operating as resistance inputs 18
Special Inputs operating as temperature inputs 19
3.2 Digital Inputs 20
Digital Input fast counter 20
4ISMA-B-FCU device outputs 21
4.1 Triac Outputs 21
4.2 Digital Outputs 22
O1 – O3 relays “Fan” 22
O4 – HTG relay “Electrical Heater” 22
O5 – CLG relay “Electrical Cooler” 23
4.3 Analog Outputs 24
5MAC DIP SWITCH addressing table 26
6List of supported temperature sensors 32

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1Introduction
This document presents ISMA-B-FCU device hardware information.
1.1 Document change log
V1.1 – iSMA-B-FCU-LL hardware description added
1.2 Safety rules
•Please note: incorrect wiring of this product can cause its’ damage and may result in other
hazards. Make sure the product has been correctly wired before turning the power ON.
•Before wiring, or removing / mounting the product, be sure to turn the power OFF. Failure to
do so might cause electric shock.
•Do not touch electrically charged parts such as the power terminals. Doing so might cause
electric shock.
•Do not disassemble the product. Doing so might cause electric shock or faulty operation.
•Use the product within the operating ranges recommended in the specification (temperature,
humidity, voltage, shock, mounting direction, atmosphere etc.). Failure to do so might cause
fire or faulty operation.
•Tighten the wires firmly to the terminal. Insufficient tightening of the wires to the terminal
might cause fire.

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1.3 Technical specifications
iSMA-B-FCU-HH
iSMA-B-FCU-HL
iSMA-B-FCU-LL
Power supply
Voltage
230V AC ± 10%
24V AC ± 10%
Power consumption
Max 12VA (Including 7 VA for Triac outputs)
Special Inputs
Temperature input
Measurement with attached RTDs
resolution ±0.1°C
accuracy ±0.2°C at 25°C
Voltage input
Voltage measurement from 0 to 10 VDC
(Input impedance 120 KΩ)
resolution ±6 mV
accuracy ±50 mV
Resistance input
Resistance measurement from 0 to 700 kΩ
Measurement resolution ±20 Ω for 20 kΩ load
Dry contact input
Output current ~0.2 mA
Measurement resolution
12 bits
Digital Inputs
Type
Dry contact
Max input frequency
100Hz
Analog Outputs
Voltage range
0 to 10 V DC
Max. load current
5 mA
Resolution
12 bits
Accuracy
±1%
Digital Outputs
(relays)
Resistive load
(FAN, CTG)
6A at 230V AC or 6A at 30V DC
Inductive load AC3
(FAN, CTG)
75VA at 230 V AC or 10 W at 30 V DC
Resistive load (HTG)
10A at 230V AC or 10 A at 30 V DC
Inductive load AC3
(HTG)
1/2 HP at 230 V AC
Triac Outputs
Load
Min: 20 mA
Max: 0.5 A at
230 V AC
Min: 20 mA
Max: 0.3 A at
24 V AC
Imax = 0.3 A =
ITO1 + ITO2 + I24VOut
Min: 20 mA
Max: 0.5 A at 24 V
AC
Peak load per channel
1.5 A (30 s)
Gate Control
Zero crossing turn ON
Frequency Range
47 to 63 Hz
Snubber
Snubberless Triac
Power Supply
output
Power Supply output
24 V AC ± 20%,
7 VA
24 V AC ± 20%, 7 VA*
* In HL this Power Supply is also
used for Triac Outputs
RS485
RS485
Up to 128 devices

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Interface
Failsafe Receiver (Bus Open, Bus Shorted, Bus Idle)
Communication
protocols
Modbus RTU, Modbus ASCII or BACnet MSTP
set by switch
Baud rate
From 2400 to 115200 set by switch
Address
0 to 255 set by DIP switch
RJ12 Interface
RS485
Up to 128 devices
Communication
protocol
Modbus RTU
Baud rate
From 2400 to 115200
Power supply
34 V DC ± 15%, 2.5 W
USB
USB
Mini USB 2.0
Ingress
protection
IP
IP40
Temperature
Storage
– 40°C to +85°C
Operating
0°C to +50°C
Humidity
Relative
5 to 95%
Connectors
Inputs / Outputs,
Power Supply and
Communication
Removable
HTG Relay
Constant
Maximum cable size
1.5 mm2
Dimensions
Width
123 mm
Length
137 mm
Height
55 mm
Table 1 Technical specification

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1.4 Dimensions
Figure 1 iSMA-B-FCU dimensions (all versions)

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2Hardware specification
2.1 Terminals and internal connection diagram
There are 3 types of hardware available:
•iSMA-B-FCU-HH with 230 V AC power supply and Triac Outputs,
•iSMA-B-FCU-HL with 230 V AC power supply and 24 V AC Triac Outputs,
•iSMA-B-FCU-LL with 24 V AC power supply and Triac Outputs.
2.1.1 iSMA-B-FCU-HH
iSMA-B-FCU-HH has a high voltage power supply (230 V AC) and high voltage Triac Outputs
(230 VAC). The Triac Outputs are connected directly to the main controller power supply as
presented in diagram below. The maximum current for each Triac Output is 0.5 A. The maximum
power consumed by external equipment connected to the
24 V terminals (L2, N2) cannot exceed 7VA in total.
Figure 2 iSMA-B-FCU-HH diagram of terminals and internal connections

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2.1.2 iSMA-B-FCU-HL
iSMA-B-FCU-HL has a high voltage power supply (230 V AC) and low voltage Triac Outputs (24 V
AC). The Triac Outputs are connected to a built-in 24 V AC transformer as shown in the below
diagram. The maximum power consumed by the external equipment connected to the Triac
Outputs and to 24 V terminals (L2, N2) cannot exceed 7 VA in total.
Figure 3 iSMA-B-FCU-HL diagram of terminals and internal connections

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2.1.3 iSMA-B-FCU-LL
iSMA-B-FCU-LL has a low voltage power supply and Triac Outputs (24 V AC). The Triac Outputs are
connected to power supply terminals. The maximum current for each of the Triac Outputs is 0.5 A.
The maximum power used by external equipment connected to the 24 V terminals (L2, N2) cannot
exceed 7 VA in total.
Figure 4 iSAM-B-FCU-LL diagram of terminals and internal connections

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2.2 Power supply connection
iSMA-B-FCU-HH and iSMA-B-FCU-HL are designed to work with 230 V AC power supply. Each ISMA-
B-FCU device is equipped with a built-in 6 A fuse protecting the controller and connected 230 VAC
equipment.
Figure 5 230 V AC Power supply connection
iSMA-B-FCU-LL is designed to work with 24 V AC power supply. The device is equipped with a built-
in 6 A fuse protecting the controller and connected 24 V AC equipment.
Figure 6 24 V AC Power supply connection
Note: Total current for digital relay outputs O1-O4 cannot exceed 6A.
Note: It is forbidden to use a fuse with current exceeding 6 A! Higher current may permanently
damage the device and cause danger to the user and to the equipment!
2.2.1. 24 V AC power supply for external equipment
iSMA-B-FCU-HH is equipped with a 24 V AC, 7 VA power supply output to supply an external
equipment like sensors and actuators. This power supply uses a separate coil in the transformer.
24 V AC power supply terminal connection is labeled L2, N2.
iSMA-B-FCU-HL is equipped with a 24 V AC power supply output for thermal valves controlled by
Triac Outputs and external devices like sensors and actuators. This power supply uses a separate
coil in the transformer. 24 V AC power supply terminal connection is labeled L2, N2. The total power