envea STACK 602, User Manual

Page: 16 / 68

9 Maintenance STACK 602
16
(PC-000848-MA Issue 5, December 2021)
ENVEA UK Ltd
Hazardous zone
classification
not available for this product
2.3 System Options
Control Unit
▪
Standard Module (for single-channel systems)
▪
ProController (for up to 32 sensors/channels)
Network Modules (for use with E
NVEA
control units only)
Analogue Output Module
(AOM)
8x 4-20mA (500 Ω )
Auxiliary Input Module
(AIM)
4x 4-20mA inputs or 4x Digital inputs
Network Spur
Divides a Modbus (RS-485) cable into two
branches.
PSU Repeater
Provides power supply unit for voltage and signal
boost for extended cabling runs with multiple
sensors.
Relay Output Module
(ROM)
8x Relays (1A @ 250V), user configurable
2.4 Cabling
All cabling should be rated for use up to at least +65 °C (149 °F) to allow for an
ambient temperature of up to +50 °C (122 °F). For information on sensor cabling
requirements and considerations, consult TN007 Network Cable Lengths (see
Related Documentation
on page
11
).
Maximum
cable
lengths
▪
RS-232: max. 15 m (50 ft.)
▪
RS-485: max. 1,000 m (3,280 ft.)
ProController only –
▪
Ethernet (RJ45): up to 100 m (328 ft.) between active devices
▪
USB 2.0, type A: max. 2 m (6½ ft.)
2.4.1 Data Cable Specifications
The minimum requirements for sensor cabling are outlined in the following table.
Cables supplied by ENVEA meet these requirements.
Sensor-to-Controller Cable
Cable type
4-core (2-pair) cable
Conductor size Ø 0.5 mm² (16/0.2)
Current rating 1A r.m.s (per core), max.
Working voltage
440V r.m.s, max.
Cable shielding
Flame-retardant PVC outer sheath (Ø 7.9 mm/0.3 in.), with
overall tinned copper, braided, or foil screen.
Resistance <40 Ω/km (12.192 Ω/kft), recommended for long cable runs
Compliance
BS5308 part 2, type 1