Owner's manual

PB-DOUT8
22 Oct 98
Introduction
Page 1 - 3Man. ID 17984, Rev. Index 0110
1. Introduction
The PB-DOUT8 is a single-size ModPack piggyback (100 mm x 48 mm) designed to fit
any of the following carrier boards of the PEP Modular Computers ModPack range:
• VMOD
• VMOD-2/VMOD-2D,VMOD-4D
• VM642/662
• CXM-IMOD
It will also, where possible and appropriate, be compatible with future Modpack boards
The PB-DOUT8 is an 8-channel digital output module utilising “intelligent” power transis-
tors which prevent damage to the circuitry resulting from exposure to the following fac-
tors:
• overload;
• undervoltage and overvoltage;
• short circuit;
• overtemperature;
• electrostatic discharges.
In addition, the PB-DOUT8 module is provided with open-load detection.
1.1 EMC Compliance
The PB-DOUT8 piggyback module complies with the requirements of the following CE-
relevant standards:
• Emission: EN50081-1;
• Immission: EN50082-2;
• Electrical Safety: EN60950.
1.2 Board Overview
PB-DOUT8 is a piggyback output module consisting of eight channels with high-side
and eight channels with low-side switches. Each channel has its own status bit. The
switches are divided into four separate groups, each group having individual power sup-
ply (up to 40 V) and grounding. The channel groups are galvanically isolated from one
another and towards the VMEbus.
The output channels switch direct current, namely 1.3 A on the low side and 1.8 A on
the high side, although the minimum output current may vary with different temperatures
(see table 2-1 for exact figures). The maximum (peak) output current is instead typically
4.0 A on the low side and 5.0 A on the high side. The output voltage is typically 24 V DC.