6 Module cards
49
© Copyright Vaisala 2019. All rights reserved.
6 Module cards
A module card adds functions to the MI, e.g. a relay module card contains two relays
that can be used as wash relays or alarm relays. There are eight module card slots inside
an MI. Each Multichannel User Interface MI is shipped with one
relay module card
with
2 independent relays and one
mA output module card
with two independent 4-20 mA
outputs as a standard. These are already installed in the MI. In addition to the relay
module card and the mA output module card, there is a general input/output module
card with 8 digital inputs/outputs. These module cards have the capability to be used
in any combination as well as added and removed as needed.
6.1 Installation
To install a module card,
turn off MI power first
. Then open the enclosure, remove the
display screws and fold the display to the side (see Figure 6.1). Unscrew and remove
the module card cover to get access to the card slots. Insert the module card in an avail-
able card slot. To make adding cards easier, start from the left. Vaisala recommends for
safety reasons that relay modules are mounted in slots 2, 4, 6 and 8 (connector down-
wards). This way the relay power wiring is as short as possible. Other module cards
may be mounted in any slot.
Important:
A relay module card may have an external power source. Make sure that
also this external power source connected to a relay module is
OFF
before installing or
removing module cards.
Содержание MI
Страница 1: ...IM EN MI v 2 00 Instruction Manual Multichannel User Interface MI ...
Страница 4: ...Document Revision No IM EN MI 2 00 Effective September 2 2019 ...
Страница 8: ...MI instruction manual Document Revision No IM EN MI 2 00 Effective September 2 2019 ...
Страница 11: ...2 Mounting 3 Copyright Vaisala 2019 All rights reserved Figure 2 2 Enclosure dimensions ...
Страница 83: ...8 Specifications 75 Copyright Vaisala 2019 All rights reserved 8 2 Parts ...
Страница 84: ...76 MI instruction manual Document Revision No IM EN MI 2 00 Effective September 2 2019 ...
Страница 86: ...78 MI instruction manual Document Revision No IM EN MI 2 00 Effective September 2 2019 ...
Страница 88: ...80 MI instruction manual Document Revision No IM EN MI 2 00 Effective September 2 2019 ...
Страница 90: ...82 MI instruction manual Document Revision No IM EN MI 2 00 Effective September 2 2019 ...
Страница 92: ...www vaisala com ...