Det-Tronics UD10 FlexVu Universal Display SAFETY MANUAL User Manual

Page 3

2.1

95-8668

COMMON MISUSE SCENARIOS
Refer to the Installation and Troubleshooting sections

of the instruction manual for detailed information on

avoidance and resolution of common misuse scenarios.

Applications to avoid include the following:
- Locations where impact or other excessive

mechanical stress is likely.

- Locations where the UD10 display is not easily

viewable or accessible.

- Mounting the UD10 without properly sealing ALL

conduit entries.

START-Up AND COMMISSIONING

NOTE

All safety functions of the UD10 are active within
150 seconds of power-up without any user action
required.

Commissioning personnel
The Safety Certified UD10 Universal Display can be

commissioned by any qualified person with knowledge

of the detection instruments and configuration devices

being used. Refer to the Start-Up and Calibration

sections provided in the UD10 instruction manual.

Configuration
The UD10 faceplate display or a HART handheld device

can be used to monitor internal status or to modify the

factory settings. Refer to the UD10 instruction manual

for guidance on using the UD10 LCD display, HART,

MODBUS, or Foundation Fieldbus communication.

Specifics on HART or UD10 display communication can

be found in the appropriate Appendix of the instruction

manual. The proper Appendix is determined by the

sensor being used with the UD10.

NOTE

Prior to device configuration (setting alarm
thresholds, latch/non-latch function, etc.) all
alarm outputs must be bypassed. The device is
not safety certified during configuration change
activities.

NOTE

All configuration changes to the UD10 must be
verified by the user via a proof test, power cycle
and re-check of settings, or other appropriate
method.

Relay Configuration Requirements
Only the UD10’s Alarm and Fault relay outputs may

be used as part of a Safety Certified system. The

High Alarm and Auxiliary relays must be configured

identically to operate as a pair. The end user must

monitor the High Alarm and Auxiliary relays as a pair

using either the NO contacts wired in parallel or the NC

contacts wired in series. See Figure 1. The end user

must provide transient protection and current limiting

on the output contacts of the relays. The maximum

relay contact output must be limited to 2 amperes at 30

Vdc. The load must be a resistive load. The user must

protect against transients by using standard protection

methods such as proper grounding of shielded wire

and separation of relay load wires from other lines

carrying rapidly switched high current (e.g. large motor

power supply lines).

If the 0-20 mA analog output of the UD10 is not being

monitored for fault conditions, the status of the Fault

relay must be monitored and appropriate action taken if

a fault signal is received.

4-20 mA Configuration Requirements
The UD10 must be configured to use the 4-20 mA

output loop diagnostic. This diagnostic ensures that

the 4-20 mA output is being driven to the correct level.

To enable this function, navigate the HART menu as

follows:
Main Menu > Display Setup > OP Feedback Flt.

Select ON.

After enabling the output loop diagnostic function,

perform an output loop calibration. Refer to the “UD10

Output Trim” section in the UD10 Instruction Manual

(number 95-8661) for detailed instructions.

OPEN = NORMAL OPERATION
CLOSED = ALARM

CLOSED = NORMAL OPERATION
OPEN = ALARM

HIGH ALARM

(DE-ENERGIZED)

AUXILIARY

(DE-ENERGIZED)

A2588

Figure 1—High Alarm and Auxiliary Relays

Configured as a De-Energized Pair