Description

The DRML1 Load Monitoring Module is designed to be plugged on

top of any Nova22 Solid State Relay with Contactor configuration

(PM22 and DR22 Series with options V or W) to monitor up to 8

heating elements with similar current value, with a total current

ranging from 1.2 Amps up to 50 Amps.

The DRML1 module permanently measures the load current and

compares it against a pre-set nominal value (TEACH value) which

is stored during the installation of the module either by pressing

the Teach-In pushbutton, placed on the front, or with the external

“Teach-In” input.

The alarm output is activated when the module detects an

undercurrent of 12.5 below the nominal value, which

corresponds to the failure of a single load. The module can also

detect other fault conditions, such as: overcurrent (currentexceeding 12.5 of the nominal current), blown fuses (open load),

damaged (short circuited) or interrupted SSR, and it can also

detect half-wave operation.

The maximum current value (20 Amps or 50 Amps) and an

adjustable alarm response delay (0.1 sec, 1 sec or 5 secs) are

selectable on the front via the parameter selector switch. The

alarm delay avoids fault messages generated by voltage drops.

Malfunctions are indicated by a multicolor LED, which indicates

when power is ON and also when the Teach-In function is

activated (Blue), when the input signal is ON (Green) and when an

alarm condition is activated (Red).

The DRML1 module is ideal for monitoring the correct operation of

a wide range of equipment, such as injection molding, plastic

extrusion and thermoforming machines.

Features

• Sensing current range from 1.2 to 50 Amps at 600 VAC

• Up to 8 resistive loads can be monitored

• Under & Overcurrent detection

• No Mains Voltage/ Open Load and SSR Short Circuit detection

• Compatible with DIN Rail and Panel Mount SSRs (DR2260DxxV/W &

PM2260DxxV)

• Easy installation and removal

• LED status indicator

• IP20 touch-safe housing

• Up to 128 outputs can be connected in parallel