SERIES PMC440 PCI MEZZANINE CARD 32-CHANNEL ISOLATED DIGITAL INPUT MODULE
___________________________________________________________________________________________
- 16 -
PCI bus Read Cycle Time
1
…… 150 nS Typical.
Notes (PCI Local Bus Interface):
1.
Although the typical read or write PCI bus cycle time is only
150nS the actual read or write implemented on the PMC
Module will be typically 1000 nS. Thus, the PMC Module will
issue a RETRY when a new read or write cycle is implemented
before the PMC modules 1000 nS read or write has completed.
When the PMC Module issues a RETRY this frees the PCI
bus while the previous read or write operation is completed.
2.
Due to the unique modular nature of the PMC440 assembly, it
is impossible to comply with the solder side component height
per the PMC Mechanical Standand. Refer to Mechanical
Assembly Drawing 4501-859 for details. You must determine
whether there will be adequate clearance for your application.
APPENDIX
CABLE: MODEL 5028-187 (SCSI-2 to Flat Ribbon, Shielded)
Type: Round shielded cable, 50-wires (SCSI-2 male connector at
one end and a flat female ribbon connector at the other end).
The cable length is 2 meters (6.56 feet). This shielded cable is
recommended for all I/O applications (both digital I/O and
precision analog I/O).
Application: Used to connect Model 5025-552 termination panel to
the PMC Module.
Length: Standard lenght is 2 meters (6.56 feet). Consult factory for
other lenghts. It is recommended that this length be kept to a
minimum to reduce noise and power loss.
Cable: 50 conductors, 28 AWG on 0.050 inch centers (permits
mass termination for IDC connectors), foil/braided shield inside
a PVC jacket.
Connectors: (One End): SCSI-2, 50-pin male connector with
backshell and spring latch hardware.
(Other End): IDC, 50-pin female connector with strain
relief.
Keying: The SCSI-2 connector has a “D Shell” and the IDC
connector has a polarizing key to prevent improper installation.
Schematic and Physical Attributes: See Drawing 4501-758.
Electrical Specifications: 30 VAC per UL and CSA (SCSI-2
connector spec.’s). 1 Amp maximum at 50% energized
(SCSI-2 connector spec.’s).
Operating Temperature: -20
°
C to +80
°
C.
Storage Temperature: -40
°
C to +85
°
C.
Shipping Weight: 1.0 pound (0.5Kg), packed.
TERMINATION PANEL: MODEL 5025-552
Type: Termination Panel For PMC Module Boards
Application: To connect field I/O signals to the PMC Module.
Termination Panel: Acromag Part 4001-040 (Phoenix Contact
Type FLKM 50). The 5025-552 termination panel facilitates the
connection of up to 50 field I/O signals and connects to the
PMC Module via a flat ribbon cable (Model 5025-551-x). Field
signals are accessed via screw terminal strips. The terminal
strip markings on the termination panel (1-50) correspond to
field I/O (pins 1-50) on the PMC module. Each PMC module
has its own unique pin assignments. Refer to the PMC module
manual for correct wiring connections to the termination panel.
Schematic and Physical Attributes: See Drawing 4501-464.
Field Wiring: 50-position terminal blocks with screw clamps. Wire
range 12 to 26 AWG.
Mounting: Termination panel is snapped on the DIN mounting rail.
Printed Circuit Board: Military grade FR-4 epoxy glass circuit board,
0.063 inches thick.
Operating Temperature: -40
°
C to +100
°
C.
Storage Temperature: -40
°
C to +100
°
C.
Shipping Weight: 1.25 pounds (0.6kg) packaged.
