SPYDER MODEL 7 VAV CONTROLLER  INSTALLATION INSTRUCTIONS
31-00475-01   6
Communications
Modbus Client
Sylk™ Supported Devices
Differential Pressure Sensor
Weight And Dimensions
Table 7  Communication Specification
Parameter  Specification
Protocol supported
BACnet IP, BACnet MSTP, 
Sylk™, Modbus RTU (Modbus 
client only), and BLE.
Ethernet 
Connection Speed
10/100 Mbps
Internet Protocol 
Version
IPv4
IP Addressing 
Modes
• Dynamic: DHCP and Link 
Local
• Static
Sylk™ bus 2-wire, polarity-insensitive
Bluetooth
BLE for using mobile 
balancing application.
Table 8  Modbus Client Specifications
Parameter Specification
Physical Layer
2-wire serial line (TIA/EIA-485) 
(with additional common).
Communication 
rates
9.6, 19.2, 38.4, 57.6, and 76.8 kb/s 
supported.
Maximum 
numbers of 
devices
32, It is recommended to connect a 
smaller number of devices for 
better Modbus performance.
Cable and wiring 
specifications
See TIA/EIA 485 Cable 
Specifications on page 21.
Communication 
Mode
Modbus client only.
Transmission 
Mode
RTU (Remote Terminal Unit).
Address Range
Modbus clients can have an 
address between 1 and 247.
Discrete inputs, coils, input 
registers, and holding registers can 
have an address between 1 and 
65534.
Table 9  Sylk™ Supported Devices
Parameter  Specification
Sylk™ wall 
modules
TR40, TR40-H, TR40-CO2, TR40-H-
CO2, TR42, TR42-H, TR42-CO2, 
TR42-H-CO2, TR71, TR71-H, TR75, 
TR75-H, TR120, and TR120-H.
Sylk™ sensor C7400S Sylk™ sensor
Sylk™ 
actuator
MS3103, MS3105, MS4103, 
MS4105, MS7403, MS7405, 
MS7503, MS7505, MS8103, 
MS8105 spring return direct coupled 
actuators (DCA) are used within 
Heating, Ventilating, and Air-
Conditioning (HVAC) systems. 
They can drive a variety of quarter-
turn; final control elements requiring 
spring return fail-safe operation.
Table 10  Differential Pressure Sensor Specification
Parameter  Specification
Range
±2.0 H
2
O (±500 Pa), bi-directional
Accuracy
±3 % of full range
Field replaceable differential pressure sensor.
Table 11  Weight And Dimensions
Parameter  Specification
Dimension 
(L x W x H)
 7 x 6 x 3 1/2 in. (175.2 x 154.3 x 90.2 
mm)
Weight
3.06 lb (1.5 Kg)
Mounting
Fixation with bracket and shaft