The MSR220P is an input expansion module for the modular Minotaur MSR200 family of monitoring safety relays. It can be
connected to either the MSR210P or MSR211P to provide additional inputs.
Up to ten input modules can be connected to a base unit by simply removing the terminator, included with each base unit, and
connecting the ribbon cables of the neighboring module. The connecting ribbon cable provides power to the MSR220P as well
as a check on its status. The terminators must be inserted into the final output module. The input modules to a base unit can
be either MSR220P or MSR221P in any combination or order.
The MSR220P has two independent inputs, which can be wired in one of five ways: one normally closed, two normally closed,
three normally closed, one normally closed and one normally open or a safety mat. When used with the MSR210 base unit, the
inputs to the MSR220 are continuously pulse-checked for shorts to power, ground and across inputs. Connecting a single device
(must be at least dual channel) to each input meets the requirements of Category 4 per EN 594-1.
Four LEDs provide status information on the inputs. Green indicates the input is closed and red indicates the input is open.
