Honeywell ACM 150 Manual To Installation, Operation, And Maintenance page 48

ACM 150
Emergency Power-Off (EPO) option
Some facilities require that equipment, like the ACM 150 monitor, have an EPO (or
panic) switch. The user can add an EPO switch between the external breaker/switch
and the Main Power Switch.
NOTE
The ACM 150 monitor is a life-safety monitor that is intended to operate under
virtually all conditions. An EPO switch is not generally recommended, because
unauthorized personnel might push it and take the ACM 150 monitor off-line
when it should be on-line.
In the Off position the Main Power Switch disconnects AC line power from all
internal parts and assemblies.
Lockout/tagout (LOTO) disconnect
Integral LOTO
CE safety standards require the AC power line to be hard-wired inside conduit
through a Lockout/Tagout disconnect. The Main Power Switch,
this LOTO disconnect. A key lock may be added when it is switched to the Off
position.
External LOTO
An external LOTO power disconnect is necessary only when the power terminal strip
located inside the Main Power Switch is accessed. The appropriate LOTO method
depends on the AC wiring option that is used. Follow your company procedures or,
if none are established, follow these recommendations for circuit breaker or fused
disconnect box: turn the power off at the box, and then close it and lock it, typically
using a padlock.
International line power
The ACM 150 monitor will operate at either 50 Hz or 60 Hz, single phase power. If
your line power is not within the range of 110-115 VAC, advise Honeywell Analytics
prior to placing an order. The ACM 150 monitor can be set up at the factory to
operate on AC power in the range of 200-230 volts AC. Appropriate sizing of the
external circuit breaker is the user's responsibility.
Isolation transformer
The ACM 150 monitor is internally protected against voltage spikes and power
fluctuations. If your line power quality is poor and/or subject to severe spikes or
lightening strikes, an external isolation transformer (2.0 KVA) should be installed to
protect the monitor. This is unnecessary if the ACM 150 monitor connects to a UPS.
48
Figure 24, provides