Emerson Process Management ControlWave EFM 3808 - Manual (Page 30)

1-14 / Introduction CI-ControlWave EFM
1.3.3.1 SCM Mode Switch
SCM Module’s Mode Switch (SW1), is a 2-position piano type DIP-Switch that is utilized for
recovery mode and core updump operations (see Sections 2.4.3 and 3.6)
1.3.3.2 SCM Board Fuse
The SCM is fused to protect the entire system. 5x20mm Slow Blow Fuse F1 is rated at 1A.
1.3.3.3 SCM Board Connectors
Connectors TB1, TB2, J1, J2 and P2 function as described below.
SCM Bd. Terminal Block Connector TB1
TB1 provides 3 input connections for bulk power:
TB1-1 = +VIN (+4.5/4.9 to +16.0V dc for +6Vdc supply)
(+9.6/10.3V to +16V dc for +12Vdc supply)
TB1-2 = -VIN (Supply Ground - PSGND)
TB1-3 = Chassis Ground - CHASSIS ( )
SCM Bd. Terminal Block Connector TB2
TB2 provides 3 connections for a 100-ohm platinum bulb (DIN 43760 curve) RTD:
TB2-1 = RTD + (Sense or Excitation)
TB2-2 = RTD + (Sense or Excitation)
TB2-3 = RTD – (Return)
SCM Bd. Connector P2
P2 is an 8-pin non-keyed male in-line connector that mates with the Multivariable
Transducers (MVT) Interface Cable’s female connector.
SCM Bd. Connector P1
P1 is a 44-pin non-keyed male card-edge connector that mates with Backplane connector P1
(slot #1) and interfaces Power, Ground, Status and Control signals to the system.
SCM Bd. Connector J2
RJ-45 Connector J2 provides an interface to a remote Display/Keypad Assembly.
1.3.3.4 SCM Jumpers
ControlWave EFM SCM Modules are provided with six User Configuration Jumpers (see
Figure 1-6 for jumper functionality).
1.3.3.5 SCM LEDs
In addition to WATCHDOG and IDLE LEDs, the SCM contains six status LEDs, which are
driven by a status register on the CPU Module. These LEDs are visible through the front
panel and provide run time status codes (see Section 2.4.2 or Section 3.3.2).