The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, machinery, electronics, automobile manufacturing, tobacco, plastics machinery, electric power, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution and so on.

TRICONEX PLM 3900N Industrial control module

Metro Ethernet access • Ethernet services support per IEEE 802.1ad Provider Bridge services (also known as Q-in-Q or VLAN stacking): ¬ Transparent LAN services with service VLAN (SVLAN) and customer VLAN (CVLAN) concept ¬ Ethernet network-to-network interface (NNI) and user-network interface (UNI) services ¬ Service access point (SAP) profile identification ¬ CVLAN-to-SVLAN translation • Ethernet OA&M compliant with ITU Y.1731 and IEEE 802.1ag version 8.1 for connectivity fault and performance management and IEEE 802.3ah EFM for link OA&M • Service Assurance Agent (SAA) for SLA compliance validation • Private VLAN feature for user traffic segregation • MAC-Forced Forwarding support according to RFC 4562 • DHCP Option 82: Configurable relay agent information • IP Multicast VLAN (IPMVLAN) • Optimized Ethernet access services delivery ¬ Network bandwidth protection against overload of video traffic ¬ Multicast streams isolation from multiple content providers over the same interface • MEF 9 and 14 certified • Managed by Alcatel-Lucent 5620 Service Aware Manager • Customer provider edge (CPE) test head traffic generator and analyzer tool to validate customer Service Level Agreements (SLA) • TR-101 PPPoE Intermediate Agent allow

Application and features

The protective current relay type RMC-121D forms part of a complete DEIF series of relays for protection and control of generators and is primarily designed for marine applications. Also available are short circuit relays (RMC-111D), combined short circuit and over-current relays (RMC-122D) and double over-current relays (RMC-132D). 1.1.2 Measuring principle The relay measures the highest of the 3-phase currents, providing an RMS measurement at sinusoidal currents. In order to obtain a short response time on a fault condition, the measurement is based on peak values. The set point value is set on the front of the relay by means of a potentiometer. If exceeded, a fault signal is generated, and the associated yellow LED is lit. 1.1.3 Timer functions When the set point is exceeded, its timer starts and will run as long as the fault condition prevails. If the fault disappears, the timer is reset. When the timer expires, the contact is activated and the associated red LED is lit.

Relay outputs 

The RMC-121D is provided with one relay coil with two maximum contacts. The relay can be configured either to normally energised or normally de-energised. The contacts may be set to open or to close on activation (same function on both contacts). Normally energised contact Recommended for marine installations for warning and alarm purposes. In case of an auxiliary supply dropout, the contacts are activated immediately. Normally de-energised contact Recommended for marine installations for regulating and control purposes. An auxiliary supply failure will not result in an unwanted activation of the contact. Latch circuit The contacts can be locked in their warning position, even if the input currents return to normal. (Add "L" to contact type in order specifications, if this is required). The latch circuit is reset by disconnecting the auxiliary supply.