GE VMIVME-2210 Relay Board

GE VMIVME-2210 Relay Board

Functional Characteristics

Introduction: 

The VMIVME-2210 provides 64 One Form C (SPDT)  contacts to the user via two 96-pin DIN connectors. These relays  are the magnetic latching type which means that, once a  contact is set it will remain set (even if power is removed from  the relay) until it is reset. All three contact points are brought out  via the connector. They are the N.O. (Normally Open), N.C.  (Normally Closed), and the Common contact points. The N.O. and  the Common can be used to create One Form A contacts while  the N.C. and common can be used as One Form B contacts.  This arrangement permits 64-conductor cables to be used for  Form A switches.

The VMIVME-2210 is populated with double pole relays, but only  one pole is brought out to the user. The other pole is used by the  Built-in-Test (BIT) logic. The state of the controlling Data  Registers or the N.C. poles is read during read accesses of the  board. The Control Registers are located at the same address as  the relays. This allows the user to monitor both the state of the  user contacts and the Control Registers. Because the read pole  and the user’s pole are controlled by the same coil, BIT can monitor the user’s contacts via the N.C. contacts of the second  pole.

Board Functions: 

Sixty-four one Form C latching relay contacts  via two 96-pin DIN connectors. One extra set of contacts (the  N.C. set) is used for BIT. Latching relays hold their state (even  with power removed) until commanded to change.

Compliance: 

The VMIVME-2210 conforms to the ANSI/IEEE STD  1014-1987 IEC 821 and 297 VMEbus specification with the  following mnemonics: A24, A16: 3D/39, 2D/29: D32, D16,  D08(EO): Slave.  

Addressing Scheme: 

The base address of this board contains  the board ID. Stacked above this 16-bit word is a 16-bit CSR. The  Output Registers are placed at the next longword boundary  above the CSR. Finally, the Contact Registers are stacked above  the Output Registers. The Output and the Contact Registers are  addressable as sixteen 8-bit bytes, eight 16-bit words, or four  32-bit longwords, located on any 128-bit boundary within  standard data or short supervisory or nonprivileged I/O space.

Board Addressing: 

Twenty jumpers are used to select the base  address of the board. One jumper determines the address space  (standard data or short I/O) of the board. Another chooses  supervisory, nonprivileged, or either access mode. And the  remaining 18 set up the base address of the board. 

Built-in-Test: Board testing is accomplished by performing a  read operation. Reading the address of the relay in question will  place the state of its Data Register on the bus. Reading the  Contact Register transfers the state of the second N.C. contact  to the bus. Both the data controlling the relay and the contact  state can now be compared. This is done because the relay  takes so long (7 ms maximum) to change its state. With this  information, the user can determine when the relay contacts  have changed state.  

Nonlatching Option: 

If the nonlatching option is ordered, then  standard relays are used. The contact data is not affected.  However, the contacts will NOT hold when power is interrupted.  This option will permit resets and power loss to place the relays  in their normal position. Thus, N.O. contacts will open and the  N.C. contacts will close. All other board operations are the same  as those for the latching version

Features:  

• Latching contacts will hold their state with power off  

• Available in latching and nonlatching versions  

• 1 Form C contacts (SPDT) with 96-conductor cable  

• 1 Form A contacts (SPST) with 64-conductor cable  

• 8-, 16-, or 32-bit data transfers  

• Supports real time and offline fault detection and isolation

• 2.0A current rating  

• Protection from relays changing during power up/down