SMAR LC700 - Page 44

LC700 – User’s Guide
3.6
COMMUNICATION PORTS
Quantity 3 (P1, P2, P3)
Types
P1 – EIA - 232C (Point-to-Point) Modbus RTU
P2 – EIA - 485 (Multi-drop) Modbus RTU
P3 – EIA - 485 (Multi-drop) Modbus RTU
Connectors
DB9 Female for P1
Terminal Block (3 Points)
Operation Independent
Label See Modules and Accessories
Baud Rate/Address
P1 1200, 2400, 4800, 9600, 19.2K, 38.4K,
57.6K bps
P2/P3 as Modbus RTU: 1200, 2400, 4800,
9600, 19.2K, 38.4K, 57.6K, 115200K bps
Protocol
Modbus RTU (Slave) or Dedicated SMAR
Remote I/O
CPU ID ( Modbus Address )
1 to 200 assigned by the user (1 is the default
address)
Maximum Number of LC700 CPU’s per
Network
31
INTERNAL POWER
Provided by the IMB bus 5VDC, @ 240mA
Total Maximum Dissipation 1.20W
Power Indicator "+5VDC" Green LED
FAILURE CIRCUIT
Output Type
Relay, Normally Close (NC). Relay is OPEN
for normal operation
Contact Voltage Limits 20 – 115 VAC/VDC
Maximum Contact Current for 115 VAC 1.0 A (resistive); 0.5 A (inductive)
Maximum Contact Current for 24 VDC 1.0A (resistive); 0.5A (inductive)
Maximum Initial Contact Resistance
50 mΩ
Status Display Red LED "Fail" (Contact Closed)
Relay Power Indicator
Green LED - ON if the relay circuit is powered
(contact closed)
Leakage 500 mA @ 100VAC
Over Load Protection Should be provided externally
Internal RC Protection Circuit
62 Ω in series with 0.01 μF
Operate Time 10 ms maximum
Release Time 10 ms maximum
Electrical service life 100.000 operations min @ 0.5A ,115 VAC
External Power Indicator "Relay Coil Power" Green LED
External Power 8.3 mA @ 24 VDC
External Voltage Range
23-30 VDC (excessive voltage can burn the
relay coil)
Resistance
2880 Ω (Coil)
Inductance 2.7 H (Coil)
Optical Isolation 5000Vac before the Relay’s isolation.