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promesstec GmbH
I Niedersachsenstraße 4 I D- 48465 Schüttorf I Tel.:+49 (0)5923/ 90 229 0 I Fax:+49 (0)5923/ 90 229 29
E-Mail: [email protected] I Internet: www.promesstec.com
5. How to demount the UMU 100-B-B
First, remember to demount the connectors with hazardous voltages.
The device is detached from the DIN rail by moving the bottom lock down.
When the front LED lights red / display shows AO.ER
The UMU 100 has been developed with a high safety level. Therefore, a continuous
measurement of the outgoing current is carried out on a
4…20mA output signal. If the
current output signal is different from the internal calculated output value or the cur-
rent output is 0 (due to e.g. an open circuit breakage), an error mode switches on the
red front LED and disables the relays. This function is not a default option but must
be actively selected via the programming menu (S4-20 &S20-4). The error mode can
only be reset by switching off and then switching on the supply voltage to the device.
