DEIF DM-4 Marine&Offshore Ship Power Management System

Safety: EN 61010-1, overvoltage category III (600V AC), pollution level 2

SCM module (electrical measurement)

Voltage measurement: Direct 100~690V rms (phase to phase), can be extended through PT, overload 2 × Un for 10 seconds, external fuse maximum 2A slow melting.

Current measurement: CT secondary 1A or 5A, overload 10A continuous, 75A continuous for 10s, 300A continuous for 1s.

Frequency range: 30~70Hz

Accuracy: Class 0.5 (IEC 688)

Harmonic measurement: up to 500Hz

Isolation: 2.5kV isolation (voltage input to other circuits)

IOM module (input/output)

16 input channels (mA/V/binary optional), 10 bit resolution

12 relay output (250V AC/8A)

2 analog outputs (0-20mA, 500 Ω load, Class 0.5）

Isolation (analog output to other circuits 500V AC)

Engineering installation and maintenance tips

Rack selection: Select 24/30/42/60TE racks based on the number of I/O and SCM, with 20% expansion margin reserved.

Network redundancy: For DP 2/3 projects, PCM 4-5 should be selected and dual redundant LAN options should be ordered.

Power reliability: The PCM module power supply should be taken from an independent battery pack and equipped with appropriate fuses (up to 6A with line protection).

Grounding and Shielding: Shielded cables are required for DM-4 LAN twisted pair and CAN bus, with single end grounding and terminal resistance configured according to the actual number of nodes (specific values can be consulted with DEIF).

Software backup: After debugging, save the complete parameter files through USW for quick recovery when replacing modules.

Vibration protection: The frame is installed on a base to meet DNV vibration requirements and does not require additional vibration reduction (certified by a classification society).